Finding the Fourth Proportional to 138,504.60, 207,854.10 and 88,705.80
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Solution
The fourth proportional to 138,504.60, 207,854.10 and 88,705.80 is: 133,120.95
Step by Step Solution
- Step 1: Write the proportion equation
138,504.60 : 207,854.10 = 88,705.80 : x - Step 2: Convert to fraction form
138,504.60/207,854.10 = 88,705.80/x - Step 3: Cross multiply
138,504.60x = 207,854.10 × 88,705.80 - Step 4: Simplify right side
138,504.60x = 18,437,864,223.78 - Step 5: Solve for x
x = 18,437,864,223.78/138,504.60 - Step 6: Final answer
x = 133,120.95
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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.