Home / 123,399.20-170,291.43-66,810.58

Finding the Fourth Proportional to 123,399.20, 170,291.43 and 66,810.58

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Solution

The fourth proportional to 123,399.20, 170,291.43 and 66,810.58 is: 92,198.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,399.20 : 170,291.43 = 66,810.58 : x
  2. Step 2: Convert to fraction form
    123,399.20/170,291.43 = 66,810.58/x
  3. Step 3: Cross multiply
    123,399.20x = 170,291.43 × 66,810.58
  4. Step 4: Simplify right side
    123,399.20x = 11,377,268,781.60
  5. Step 5: Solve for x
    x = 11,377,268,781.60/123,399.20
  6. Step 6: Final answer
    x = 92,198.88

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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.