Home / 136,338.30-204,470.01-86,343.42

Finding the Fourth Proportional to 136,338.30, 204,470.01 and 86,343.42

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Solution

The fourth proportional to 136,338.30, 204,470.01 and 86,343.42 is: 129,491.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,338.30 : 204,470.01 = 86,343.42 : x
  2. Step 2: Convert to fraction form
    136,338.30/204,470.01 = 86,343.42/x
  3. Step 3: Cross multiply
    136,338.30x = 204,470.01 × 86,343.42
  4. Step 4: Simplify right side
    136,338.30x = 17,654,639,950.83
  5. Step 5: Solve for x
    x = 17,654,639,950.83/136,338.30
  6. Step 6: Final answer
    x = 129,491.42

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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.