Home / 122,515.47-169,066.11-71,531.03

Finding the Fourth Proportional to 122,515.47, 169,066.11 and 71,531.03

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Solution

The fourth proportional to 122,515.47, 169,066.11 and 71,531.03 is: 98,709.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,515.47 : 169,066.11 = 71,531.03 : x
  2. Step 2: Convert to fraction form
    122,515.47/169,066.11 = 71,531.03/x
  3. Step 3: Cross multiply
    122,515.47x = 169,066.11 × 71,531.03
  4. Step 4: Simplify right side
    122,515.47x = 12,093,472,986.39
  5. Step 5: Solve for x
    x = 12,093,472,986.39/122,515.47
  6. Step 6: Final answer
    x = 98,709.76

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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.