Home / 109,727.20-151,432.86-61,989.31

Finding the Fourth Proportional to 109,727.20, 151,432.86 and 61,989.31

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Solution

The fourth proportional to 109,727.20, 151,432.86 and 61,989.31 is: 85,550.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,727.20 : 151,432.86 = 61,989.31 : x
  2. Step 2: Convert to fraction form
    109,727.20/151,432.86 = 61,989.31/x
  3. Step 3: Cross multiply
    109,727.20x = 151,432.86 × 61,989.31
  4. Step 4: Simplify right side
    109,727.20x = 9,387,218,502.73
  5. Step 5: Solve for x
    x = 9,387,218,502.73/109,727.20
  6. Step 6: Final answer
    x = 85,550.52

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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.