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Finding the Fourth Proportional to 105,425.43, 158,200.01 and 38,911.92

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Solution

The fourth proportional to 105,425.43, 158,200.01 and 38,911.92 is: 58,390.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,425.43 : 158,200.01 = 38,911.92 : x
  2. Step 2: Convert to fraction form
    105,425.43/158,200.01 = 38,911.92/x
  3. Step 3: Cross multiply
    105,425.43x = 158,200.01 × 38,911.92
  4. Step 4: Simplify right side
    105,425.43x = 6,155,865,938.56
  5. Step 5: Solve for x
    x = 6,155,865,938.56/105,425.43
  6. Step 6: Final answer
    x = 58,390.71

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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.