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Finding the Fourth Proportional to 142,763.92, 197,005.96 and 79,097.92

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Solution

The fourth proportional to 142,763.92, 197,005.96 and 79,097.92 is: 109,150.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,763.92 : 197,005.96 = 79,097.92 : x
  2. Step 2: Convert to fraction form
    142,763.92/197,005.96 = 79,097.92/x
  3. Step 3: Cross multiply
    142,763.92x = 197,005.96 × 79,097.92
  4. Step 4: Simplify right side
    142,763.92x = 15,582,761,663.60
  5. Step 5: Solve for x
    x = 15,582,761,663.60/142,763.92
  6. Step 6: Final answer
    x = 109,150.56

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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.