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Finding the Fourth Proportional to 132,776.70, 198,873.45 and 115,280.70

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Solution

The fourth proportional to 132,776.70, 198,873.45 and 115,280.70 is: 172,667.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,776.70 : 198,873.45 = 115,280.70 : x
  2. Step 2: Convert to fraction form
    132,776.70/198,873.45 = 115,280.70/x
  3. Step 3: Cross multiply
    132,776.70x = 198,873.45 × 115,280.70
  4. Step 4: Simplify right side
    132,776.70x = 22,926,270,527.42
  5. Step 5: Solve for x
    x = 22,926,270,527.42/132,776.70
  6. Step 6: Final answer
    x = 172,667.87

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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.