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Finding the Fourth Proportional to 92,446.80, 138,979.56 and 72,960.24

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Solution

The fourth proportional to 92,446.80, 138,979.56 and 72,960.24 is: 109,684.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,446.80 : 138,979.56 = 72,960.24 : x
  2. Step 2: Convert to fraction form
    92,446.80/138,979.56 = 72,960.24/x
  3. Step 3: Cross multiply
    92,446.80x = 138,979.56 × 72,960.24
  4. Step 4: Simplify right side
    92,446.80x = 10,139,982,052.69
  5. Step 5: Solve for x
    x = 10,139,982,052.69/92,446.80
  6. Step 6: Final answer
    x = 109,684.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.