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Finding the Fourth Proportional to 144,911.64, 199,930.26 and 87,529.52

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Solution

The fourth proportional to 144,911.64, 199,930.26 and 87,529.52 is: 120,761.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,911.64 : 199,930.26 = 87,529.52 : x
  2. Step 2: Convert to fraction form
    144,911.64/199,930.26 = 87,529.52/x
  3. Step 3: Cross multiply
    144,911.64x = 199,930.26 × 87,529.52
  4. Step 4: Simplify right side
    144,911.64x = 17,499,799,691.28
  5. Step 5: Solve for x
    x = 17,499,799,691.28/144,911.64
  6. Step 6: Final answer
    x = 120,761.86

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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.