Home / 131,866.38-182,079.90-121,790.79

Finding the Fourth Proportional to 131,866.38, 182,079.90 and 121,790.79

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Solution

The fourth proportional to 131,866.38, 182,079.90 and 121,790.79 is: 168,167.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,866.38 : 182,079.90 = 121,790.79 : x
  2. Step 2: Convert to fraction form
    131,866.38/182,079.90 = 121,790.79/x
  3. Step 3: Cross multiply
    131,866.38x = 182,079.90 × 121,790.79
  4. Step 4: Simplify right side
    131,866.38x = 22,175,654,864.12
  5. Step 5: Solve for x
    x = 22,175,654,864.12/131,866.38
  6. Step 6: Final answer
    x = 168,167.62

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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.