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Finding the Fourth Proportional to 138,099.92, 207,037.44 and 43,281.44

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Solution

The fourth proportional to 138,099.92, 207,037.44 and 43,281.44 is: 64,886.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,099.92 : 207,037.44 = 43,281.44 : x
  2. Step 2: Convert to fraction form
    138,099.92/207,037.44 = 43,281.44/x
  3. Step 3: Cross multiply
    138,099.92x = 207,037.44 × 43,281.44
  4. Step 4: Simplify right side
    138,099.92x = 8,960,878,537.11
  5. Step 5: Solve for x
    x = 8,960,878,537.11/138,099.92
  6. Step 6: Final answer
    x = 64,886.92

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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.