Home / 122,778.97-169,458.24-76,859.95

Finding the Fourth Proportional to 122,778.97, 169,458.24 and 76,859.95

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Solution

The fourth proportional to 122,778.97, 169,458.24 and 76,859.95 is: 106,081.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,778.97 : 169,458.24 = 76,859.95 : x
  2. Step 2: Convert to fraction form
    122,778.97/169,458.24 = 76,859.95/x
  3. Step 3: Cross multiply
    122,778.97x = 169,458.24 × 76,859.95
  4. Step 4: Simplify right side
    122,778.97x = 13,024,551,853.49
  5. Step 5: Solve for x
    x = 13,024,551,853.49/122,778.97
  6. Step 6: Final answer
    x = 106,081.29

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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.