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Finding the Fourth Proportional to 123,929.53, 171,023.83 and 67,340.90

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Solution

The fourth proportional to 123,929.53, 171,023.83 and 67,340.90 is: 92,931.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,929.53 : 171,023.83 = 67,340.90 : x
  2. Step 2: Convert to fraction form
    123,929.53/171,023.83 = 67,340.90/x
  3. Step 3: Cross multiply
    123,929.53x = 171,023.83 × 67,340.90
  4. Step 4: Simplify right side
    123,929.53x = 11,516,898,633.65
  5. Step 5: Solve for x
    x = 11,516,898,633.65/123,929.53
  6. Step 6: Final answer
    x = 92,931.03

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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.