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Finding the Fourth Proportional to 109,791.90, 151,398.87 and 93,928.86

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Solution

The fourth proportional to 109,791.90, 151,398.87 and 93,928.86 is: 129,524.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,791.90 : 151,398.87 = 93,928.86 : x
  2. Step 2: Convert to fraction form
    109,791.90/151,398.87 = 93,928.86/x
  3. Step 3: Cross multiply
    109,791.90x = 151,398.87 × 93,928.86
  4. Step 4: Simplify right side
    109,791.90x = 14,220,723,264.39
  5. Step 5: Solve for x
    x = 14,220,723,264.39/109,791.90
  6. Step 6: Final answer
    x = 129,524.34

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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.