Home / 122,981.28-169,712.40-69,266.88

Finding the Fourth Proportional to 122,981.28, 169,712.40 and 69,266.88

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Solution

The fourth proportional to 122,981.28, 169,712.40 and 69,266.88 is: 95,587.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,981.28 : 169,712.40 = 69,266.88 : x
  2. Step 2: Convert to fraction form
    122,981.28/169,712.40 = 69,266.88/x
  3. Step 3: Cross multiply
    122,981.28x = 169,712.40 × 69,266.88
  4. Step 4: Simplify right side
    122,981.28x = 11,755,448,445.31
  5. Step 5: Solve for x
    x = 11,755,448,445.31/122,981.28
  6. Step 6: Final answer
    x = 95,587.30

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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.