Home / 123,929.72-185,742.30-57,279.68

Finding the Fourth Proportional to 123,929.72, 185,742.30 and 57,279.68

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Solution

The fourth proportional to 123,929.72, 185,742.30 and 57,279.68 is: 85,849.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,929.72 : 185,742.30 = 57,279.68 : x
  2. Step 2: Convert to fraction form
    123,929.72/185,742.30 = 57,279.68/x
  3. Step 3: Cross multiply
    123,929.72x = 185,742.30 × 57,279.68
  4. Step 4: Simplify right side
    123,929.72x = 10,639,259,506.46
  5. Step 5: Solve for x
    x = 10,639,259,506.46/123,929.72
  6. Step 6: Final answer
    x = 85,849.14

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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.