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Finding the Fourth Proportional to 122,517.56, 169,061.63 and 68,802.14

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Solution

The fourth proportional to 122,517.56, 169,061.63 and 68,802.14 is: 94,939.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,517.56 : 169,061.63 = 68,802.14 : x
  2. Step 2: Convert to fraction form
    122,517.56/169,061.63 = 68,802.14/x
  3. Step 3: Cross multiply
    122,517.56x = 169,061.63 × 68,802.14
  4. Step 4: Simplify right side
    122,517.56x = 11,631,800,746.57
  5. Step 5: Solve for x
    x = 11,631,800,746.57/122,517.56
  6. Step 6: Final answer
    x = 94,939.87

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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.