Home / 123,028.20-169,778.91-66,439.58

Finding the Fourth Proportional to 123,028.20, 169,778.91 and 66,439.58

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Solution

The fourth proportional to 123,028.20, 169,778.91 and 66,439.58 is: 91,686.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,028.20 : 169,778.91 = 66,439.58 : x
  2. Step 2: Convert to fraction form
    123,028.20/169,778.91 = 66,439.58/x
  3. Step 3: Cross multiply
    123,028.20x = 169,778.91 × 66,439.58
  4. Step 4: Simplify right side
    123,028.20x = 11,280,038,624.36
  5. Step 5: Solve for x
    x = 11,280,038,624.36/123,028.20
  6. Step 6: Final answer
    x = 91,686.61

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1.5x scale

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.