Home / 122,625.12-169,223.24-71,640.74

Finding the Fourth Proportional to 122,625.12, 169,223.24 and 71,640.74

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Solution

The fourth proportional to 122,625.12, 169,223.24 and 71,640.74 is: 98,864.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,625.12 : 169,223.24 = 71,640.74 : x
  2. Step 2: Convert to fraction form
    122,625.12/169,223.24 = 71,640.74/x
  3. Step 3: Cross multiply
    122,625.12x = 169,223.24 × 71,640.74
  4. Step 4: Simplify right side
    122,625.12x = 12,123,278,138.80
  5. Step 5: Solve for x
    x = 12,123,278,138.80/122,625.12
  6. Step 6: Final answer
    x = 98,864.56

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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.