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Finding the Fourth Proportional to 149,120.73, 205,731.50 and 88,693.92

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Solution

The fourth proportional to 149,120.73, 205,731.50 and 88,693.92 is: 122,364.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,120.73 : 205,731.50 = 88,693.92 : x
  2. Step 2: Convert to fraction form
    149,120.73/205,731.50 = 88,693.92/x
  3. Step 3: Cross multiply
    149,120.73x = 205,731.50 × 88,693.92
  4. Step 4: Simplify right side
    149,120.73x = 18,247,132,759.01
  5. Step 5: Solve for x
    x = 18,247,132,759.01/149,120.73
  6. Step 6: Final answer
    x = 122,364.83

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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.