Home / 123,023.92-169,800.60-80,557.78

Finding the Fourth Proportional to 123,023.92, 169,800.60 and 80,557.78

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Solution

The fourth proportional to 123,023.92, 169,800.60 and 80,557.78 is: 111,187.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,023.92 : 169,800.60 = 80,557.78 : x
  2. Step 2: Convert to fraction form
    123,023.92/169,800.60 = 80,557.78/x
  3. Step 3: Cross multiply
    123,023.92x = 169,800.60 × 80,557.78
  4. Step 4: Simplify right side
    123,023.92x = 13,678,759,378.67
  5. Step 5: Solve for x
    x = 13,678,759,378.67/123,023.92
  6. Step 6: Final answer
    x = 111,187.80

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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.