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Finding the Fourth Proportional to 100,158.88, 138,209.68 and 59,864.64

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Solution

The fourth proportional to 100,158.88, 138,209.68 and 59,864.64 is: 82,607.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,158.88 : 138,209.68 = 59,864.64 : x
  2. Step 2: Convert to fraction form
    100,158.88/138,209.68 = 59,864.64/x
  3. Step 3: Cross multiply
    100,158.88x = 138,209.68 × 59,864.64
  4. Step 4: Simplify right side
    100,158.88x = 8,273,872,737.72
  5. Step 5: Solve for x
    x = 8,273,872,737.72/100,158.88
  6. Step 6: Final answer
    x = 82,607.48

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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.