Home / 146,149.38-218,590.65-86,034.56

Finding the Fourth Proportional to 146,149.38, 218,590.65 and 86,034.56

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Solution

The fourth proportional to 146,149.38, 218,590.65 and 86,034.56 is: 128,678.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,149.38 : 218,590.65 = 86,034.56 : x
  2. Step 2: Convert to fraction form
    146,149.38/218,590.65 = 86,034.56/x
  3. Step 3: Cross multiply
    146,149.38x = 218,590.65 × 86,034.56
  4. Step 4: Simplify right side
    146,149.38x = 18,806,349,299.91
  5. Step 5: Solve for x
    x = 18,806,349,299.91/146,149.38
  6. Step 6: Final answer
    x = 128,678.95

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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.