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Finding the Fourth Proportional to 158,474, 218,654.96 and 93,958.38

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Solution

The fourth proportional to 158,474, 218,654.96 and 93,958.38 is: 129,639.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,474 : 218,654.96 = 93,958.38 : x
  2. Step 2: Convert to fraction form
    158,474/218,654.96 = 93,958.38/x
  3. Step 3: Cross multiply
    158,474x = 218,654.96 × 93,958.38
  4. Step 4: Simplify right side
    158,474x = 20,544,465,820.56
  5. Step 5: Solve for x
    x = 20,544,465,820.56/158,474
  6. Step 6: Final answer
    x = 129,639.35

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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.