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Finding the Fourth Proportional to 122,659.65, 169,275.11 and 68,944.50

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Solution

The fourth proportional to 122,659.65, 169,275.11 and 68,944.50 is: 95,146.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,659.65 : 169,275.11 = 68,944.50 : x
  2. Step 2: Convert to fraction form
    122,659.65/169,275.11 = 68,944.50/x
  3. Step 3: Cross multiply
    122,659.65x = 169,275.11 × 68,944.50
  4. Step 4: Simplify right side
    122,659.65x = 11,670,587,476.67
  5. Step 5: Solve for x
    x = 11,670,587,476.67/122,659.65
  6. Step 6: Final answer
    x = 95,146.10

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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.