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Finding the Fourth Proportional to 122,424.80, 168,962.71 and 68,712.76

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Solution

The fourth proportional to 122,424.80, 168,962.71 and 68,712.76 is: 94,832.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,424.80 : 168,962.71 = 68,712.76 : x
  2. Step 2: Convert to fraction form
    122,424.80/168,962.71 = 68,712.76/x
  3. Step 3: Cross multiply
    122,424.80x = 168,962.71 × 68,712.76
  4. Step 4: Simplify right side
    122,424.80x = 11,609,894,141.18
  5. Step 5: Solve for x
    x = 11,609,894,141.18/122,424.80
  6. Step 6: Final answer
    x = 94,832.86

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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.