Finding the Fourth Proportional to 126,188,950.70, 189,283,426.05 and 80,839,318.70
Calculator
Solution
The fourth proportional to 126,188,950.70, 189,283,426.05 and 80,839,318.70 is: 121,258,978.05
Step by Step Solution
- Step 1: Write the proportion equation
126,188,950.70 : 189,283,426.05 = 80,839,318.70 : x - Step 2: Convert to fraction form
126,188,950.70/189,283,426.05 = 80,839,318.70/x - Step 3: Cross multiply
126,188,950.70x = 189,283,426.05 × 80,839,318.70 - Step 4: Simplify right side
126,188,950.70x = 15,301,543,203,083,834 - Step 5: Solve for x
x = 15,301,543,203,083,834/126,188,950.70 - Step 6: Final answer
x = 121,258,978.05
Related Problems
Find fourth proportional to 63,094,475.35, 94,641,713.03 and 40,419,659.35
Half scale
Find fourth proportional to 252,377,901.40, 378,566,852.10 and 161,678,637.40
Double scale
Find fourth proportional to 126,188,951.70, 189,283,427.55 and 80,839,319.70
Similar ratio
Find fourth proportional to 189,283,426.05, 283,925,139.08 and 121,258,978.05
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.