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Finding the Fourth Proportional to 116,857.88, 161,275.92 and 71,565.92

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Solution

The fourth proportional to 116,857.88, 161,275.92 and 71,565.92 is: 98,768.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,857.88 : 161,275.92 = 71,565.92 : x
  2. Step 2: Convert to fraction form
    116,857.88/161,275.92 = 71,565.92/x
  3. Step 3: Cross multiply
    116,857.88x = 161,275.92 × 71,565.92
  4. Step 4: Simplify right side
    116,857.88x = 11,541,859,588.65
  5. Step 5: Solve for x
    x = 11,541,859,588.65/116,857.88
  6. Step 6: Final answer
    x = 98,768.35

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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.