Finding the Fourth Proportional to 107,966.76, 161,898.14 and 61,207.08
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Solution
The fourth proportional to 107,966.76, 161,898.14 and 61,207.08 is: 91,781.14
Step by Step Solution
- Step 1: Write the proportion equation
107,966.76 : 161,898.14 = 61,207.08 : x - Step 2: Convert to fraction form
107,966.76/161,898.14 = 61,207.08/x - Step 3: Cross multiply
107,966.76x = 161,898.14 × 61,207.08 - Step 4: Simplify right side
107,966.76x = 9,909,312,406.83 - Step 5: Solve for x
x = 9,909,312,406.83/107,966.76 - Step 6: Final answer
x = 91,781.14
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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.