Finding the Fourth Proportional to 157,854,232.85, 217,840,250.85 and 87,294,617.53
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Solution
The fourth proportional to 157,854,232.85, 217,840,250.85 and 87,294,617.53 is: 120,467,351.66
Step by Step Solution
- Step 1: Write the proportion equation
157,854,232.85 : 217,840,250.85 = 87,294,617.53 : x - Step 2: Convert to fraction form
157,854,232.85/217,840,250.85 = 87,294,617.53/x - Step 3: Cross multiply
157,854,232.85x = 217,840,250.85 × 87,294,617.53 - Step 4: Simplify right side
157,854,232.85x = 19,016,281,380,085,564 - Step 5: Solve for x
x = 19,016,281,380,085,564/157,854,232.85 - Step 6: Final answer
x = 120,467,351.66
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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.