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Finding the Fourth Proportional to 143,693.58, 198,343.10 and 92,707.74

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Solution

The fourth proportional to 143,693.58, 198,343.10 and 92,707.74 is: 127,966.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,693.58 : 198,343.10 = 92,707.74 : x
  2. Step 2: Convert to fraction form
    143,693.58/198,343.10 = 92,707.74/x
  3. Step 3: Cross multiply
    143,693.58x = 198,343.10 × 92,707.74
  4. Step 4: Simplify right side
    143,693.58x = 18,387,940,545.59
  5. Step 5: Solve for x
    x = 18,387,940,545.59/143,693.58
  6. Step 6: Final answer
    x = 127,966.33

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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.