Home / 123,027.83-169,778.40-66,439.20

Finding the Fourth Proportional to 123,027.83, 169,778.40 and 66,439.20

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Solution

The fourth proportional to 123,027.83, 169,778.40 and 66,439.20 is: 91,686.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,027.83 : 169,778.40 = 66,439.20 : x
  2. Step 2: Convert to fraction form
    123,027.83/169,778.40 = 66,439.20/x
  3. Step 3: Cross multiply
    123,027.83x = 169,778.40 × 66,439.20
  4. Step 4: Simplify right side
    123,027.83x = 11,279,941,460.80
  5. Step 5: Solve for x
    x = 11,279,941,460.80/123,027.83
  6. Step 6: Final answer
    x = 91,686.10

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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.