Home / 122,747.95-169,334.97-79,724.39

Finding the Fourth Proportional to 122,747.95, 169,334.97 and 79,724.39

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Solution

The fourth proportional to 122,747.95, 169,334.97 and 79,724.39 is: 109,982.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,747.95 : 169,334.97 = 79,724.39 : x
  2. Step 2: Convert to fraction form
    122,747.95/169,334.97 = 79,724.39/x
  3. Step 3: Cross multiply
    122,747.95x = 169,334.97 × 79,724.39
  4. Step 4: Simplify right side
    122,747.95x = 13,500,127,188.92
  5. Step 5: Solve for x
    x = 13,500,127,188.92/122,747.95
  6. Step 6: Final answer
    x = 109,982.51

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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.