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Finding the Fourth Proportional to 116,691.84, 161,040.96 and 66,407.04

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Solution

The fourth proportional to 116,691.84, 161,040.96 and 66,407.04 is: 91,645.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,691.84 : 161,040.96 = 66,407.04 : x
  2. Step 2: Convert to fraction form
    116,691.84/161,040.96 = 66,407.04/x
  3. Step 3: Cross multiply
    116,691.84x = 161,040.96 × 66,407.04
  4. Step 4: Simplify right side
    116,691.84x = 10,694,253,472.36
  5. Step 5: Solve for x
    x = 10,694,253,472.36/116,691.84
  6. Step 6: Final answer
    x = 91,645.26

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1.5x scale

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.