Home / 123,028.29-169,779.03-66,439.66

Finding the Fourth Proportional to 123,028.29, 169,779.03 and 66,439.66

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Solution

The fourth proportional to 123,028.29, 169,779.03 and 66,439.66 is: 91,686.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,028.29 : 169,779.03 = 66,439.66 : x
  2. Step 2: Convert to fraction form
    123,028.29/169,779.03 = 66,439.66/x
  3. Step 3: Cross multiply
    123,028.29x = 169,779.03 × 66,439.66
  4. Step 4: Simplify right side
    123,028.29x = 11,280,061,268.25
  5. Step 5: Solve for x
    x = 11,280,061,268.25/123,028.29
  6. Step 6: Final answer
    x = 91,686.73

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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.