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Finding the Fourth Proportional to 169,685.78, 234,138.28 and 98,072.47

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Solution

The fourth proportional to 169,685.78, 234,138.28 and 98,072.47 is: 135,323.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,685.78 : 234,138.28 = 98,072.47 : x
  2. Step 2: Convert to fraction form
    169,685.78/234,138.28 = 98,072.47/x
  3. Step 3: Cross multiply
    169,685.78x = 234,138.28 × 98,072.47
  4. Step 4: Simplify right side
    169,685.78x = 22,962,517,780.10
  5. Step 5: Solve for x
    x = 22,962,517,780.10/169,685.78
  6. Step 6: Final answer
    x = 135,323.76

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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.