Home / 123,991.20-171,103.10-67,402.58

Finding the Fourth Proportional to 123,991.20, 171,103.10 and 67,402.58

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Solution

The fourth proportional to 123,991.20, 171,103.10 and 67,402.58 is: 93,012.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,991.20 : 171,103.10 = 67,402.58 : x
  2. Step 2: Convert to fraction form
    123,991.20/171,103.10 = 67,402.58/x
  3. Step 3: Cross multiply
    123,991.20x = 171,103.10 × 67,402.58
  4. Step 4: Simplify right side
    123,991.20x = 11,532,789,193.47
  5. Step 5: Solve for x
    x = 11,532,789,193.47/123,991.20
  6. Step 6: Final answer
    x = 93,012.97

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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.