Home / 121,767.28-182,665.56-42,865.12

Finding the Fourth Proportional to 121,767.28, 182,665.56 and 42,865.12

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Solution

The fourth proportional to 121,767.28, 182,665.56 and 42,865.12 is: 64,302.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,767.28 : 182,665.56 = 42,865.12 : x
  2. Step 2: Convert to fraction form
    121,767.28/182,665.56 = 42,865.12/x
  3. Step 3: Cross multiply
    121,767.28x = 182,665.56 × 42,865.12
  4. Step 4: Simplify right side
    121,767.28x = 7,829,981,149.27
  5. Step 5: Solve for x
    x = 7,829,981,149.27/121,767.28
  6. Step 6: Final answer
    x = 64,302.83

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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.