Finding the Fourth Proportional to 99,641.80, 149,462.70 and 47,153.80
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Solution
The fourth proportional to 99,641.80, 149,462.70 and 47,153.80 is: 70,730.70
Step by Step Solution
- Step 1: Write the proportion equation
99,641.80 : 149,462.70 = 47,153.80 : x - Step 2: Convert to fraction form
99,641.80/149,462.70 = 47,153.80/x - Step 3: Cross multiply
99,641.80x = 149,462.70 × 47,153.80 - Step 4: Simplify right side
99,641.80x = 7,047,734,263.26 - Step 5: Solve for x
x = 7,047,734,263.26/99,641.80 - Step 6: Final answer
x = 70,730.70
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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.