Finding the Fourth Proportional to 158,721.41, 219,041.12 and 87,102.02
Calculator
Solution
The fourth proportional to 158,721.41, 219,041.12 and 87,102.02 is: 120,203.85
Step by Step Solution
- Step 1: Write the proportion equation
158,721.41 : 219,041.12 = 87,102.02 : x - Step 2: Convert to fraction form
158,721.41/219,041.12 = 87,102.02/x - Step 3: Cross multiply
158,721.41x = 219,041.12 × 87,102.02 - Step 4: Simplify right side
158,721.41x = 19,078,924,015.06 - Step 5: Solve for x
x = 19,078,924,015.06/158,721.41 - Step 6: Final answer
x = 120,203.85
Related Problems
Find fourth proportional to 79,360.71, 109,520.56 and 43,551.01
Half scale
Find fourth proportional to 317,442.82, 438,082.24 and 174,204.04
Double scale
Find fourth proportional to 158,722.41, 219,042.50 and 87,103.02
Similar ratio
Find fourth proportional to 238,082.12, 328,561.68 and 130,653.03
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.