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Finding the Fourth Proportional to 138,283.84, 207,250.80 and 88,344.64

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Solution

The fourth proportional to 138,283.84, 207,250.80 and 88,344.64 is: 132,405.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,283.84 : 207,250.80 = 88,344.64 : x
  2. Step 2: Convert to fraction form
    138,283.84/207,250.80 = 88,344.64/x
  3. Step 3: Cross multiply
    138,283.84x = 207,250.80 × 88,344.64
  4. Step 4: Simplify right side
    138,283.84x = 18,309,497,315.71
  5. Step 5: Solve for x
    x = 18,309,497,315.71/138,283.84
  6. Step 6: Final answer
    x = 132,405.18

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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.