Finding the Fourth Proportional to 120,061.18, 165,679.97 and 66,345.08
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Solution
The fourth proportional to 120,061.18, 165,679.97 and 66,345.08 is: 91,553.75
Step by Step Solution
- Step 1: Write the proportion equation
120,061.18 : 165,679.97 = 66,345.08 : x - Step 2: Convert to fraction form
120,061.18/165,679.97 = 66,345.08/x - Step 3: Cross multiply
120,061.18x = 165,679.97 × 66,345.08 - Step 4: Simplify right side
120,061.18x = 10,992,050,864.05 - Step 5: Solve for x
x = 10,992,050,864.05/120,061.18 - Step 6: Final answer
x = 91,553.75
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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.