Home / 132,019.53-182,139.09-86,721.90

Finding the Fourth Proportional to 132,019.53, 182,139.09 and 86,721.90

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Solution

The fourth proportional to 132,019.53, 182,139.09 and 86,721.90 is: 119,644.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,019.53 : 182,139.09 = 86,721.90 : x
  2. Step 2: Convert to fraction form
    132,019.53/182,139.09 = 86,721.90/x
  3. Step 3: Cross multiply
    132,019.53x = 182,139.09 × 86,721.90
  4. Step 4: Simplify right side
    132,019.53x = 15,795,447,949.07
  5. Step 5: Solve for x
    x = 15,795,447,949.07/132,019.53
  6. Step 6: Final answer
    x = 119,644.78

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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.