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Finding the Fourth Proportional to 138,146.80, 207,098.70 and 93,629.20

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Solution

The fourth proportional to 138,146.80, 207,098.70 and 93,629.20 is: 140,361.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,146.80 : 207,098.70 = 93,629.20 : x
  2. Step 2: Convert to fraction form
    138,146.80/207,098.70 = 93,629.20/x
  3. Step 3: Cross multiply
    138,146.80x = 207,098.70 × 93,629.20
  4. Step 4: Simplify right side
    138,146.80x = 19,390,485,602.04
  5. Step 5: Solve for x
    x = 19,390,485,602.04/138,146.80
  6. Step 6: Final answer
    x = 140,361.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.