Home / 123,079.10-169,849.40-71,406.24

Finding the Fourth Proportional to 123,079.10, 169,849.40 and 71,406.24

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Solution

The fourth proportional to 123,079.10, 169,849.40 and 71,406.24 is: 98,540.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,079.10 : 169,849.40 = 71,406.24 : x
  2. Step 2: Convert to fraction form
    123,079.10/169,849.40 = 71,406.24/x
  3. Step 3: Cross multiply
    123,079.10x = 169,849.40 × 71,406.24
  4. Step 4: Simplify right side
    123,079.10x = 12,128,307,020.26
  5. Step 5: Solve for x
    x = 12,128,307,020.26/123,079.10
  6. Step 6: Final answer
    x = 98,540.75

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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.