Finding the Fourth Proportional to 137,713.60, 207,007.80 and 129,840.40
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Solution
The fourth proportional to 137,713.60, 207,007.80 and 129,840.40 is: 195,172.99
Step by Step Solution
- Step 1: Write the proportion equation
137,713.60 : 207,007.80 = 129,840.40 : x - Step 2: Convert to fraction form
137,713.60/207,007.80 = 129,840.40/x - Step 3: Cross multiply
137,713.60x = 207,007.80 × 129,840.40 - Step 4: Simplify right side
137,713.60x = 26,877,975,555.12 - Step 5: Solve for x
x = 26,877,975,555.12/137,713.60 - Step 6: Final answer
x = 195,172.99
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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.