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Finding the Fourth Proportional to 128,207.32, 192,049.86 and 104,599

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Solution

The fourth proportional to 128,207.32, 192,049.86 and 104,599 is: 156,685.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,207.32 : 192,049.86 = 104,599 : x
  2. Step 2: Convert to fraction form
    128,207.32/192,049.86 = 104,599/x
  3. Step 3: Cross multiply
    128,207.32x = 192,049.86 × 104,599
  4. Step 4: Simplify right side
    128,207.32x = 20,088,223,306.14
  5. Step 5: Solve for x
    x = 20,088,223,306.14/128,207.32
  6. Step 6: Final answer
    x = 156,685.46

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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.