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Finding the Fourth Proportional to 140,088.28, 193,320.92 and 79,658.92

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Solution

The fourth proportional to 140,088.28, 193,320.92 and 79,658.92 is: 109,928.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,088.28 : 193,320.92 = 79,658.92 : x
  2. Step 2: Convert to fraction form
    140,088.28/193,320.92 = 79,658.92/x
  3. Step 3: Cross multiply
    140,088.28x = 193,320.92 × 79,658.92
  4. Step 4: Simplify right side
    140,088.28x = 15,399,735,700.61
  5. Step 5: Solve for x
    x = 15,399,735,700.61/140,088.28
  6. Step 6: Final answer
    x = 109,928.79

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1.5x scale

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.