Finding the Fourth Proportional to 137,551.19, 206,386.17 and 74,415.78
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Solution
The fourth proportional to 137,551.19, 206,386.17 and 74,415.78 is: 111,655.80
Step by Step Solution
- Step 1: Write the proportion equation
137,551.19 : 206,386.17 = 74,415.78 : x - Step 2: Convert to fraction form
137,551.19/206,386.17 = 74,415.78/x - Step 3: Cross multiply
137,551.19x = 206,386.17 × 74,415.78 - Step 4: Simplify right side
137,551.19x = 15,358,387,821.76 - Step 5: Solve for x
x = 15,358,387,821.76/137,551.19 - Step 6: Final answer
x = 111,655.80
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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.