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Finding the Fourth Proportional to 138,348.87, 207,503.58 and 43,576.60

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Solution

The fourth proportional to 138,348.87, 207,503.58 and 43,576.60 is: 65,358.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,348.87 : 207,503.58 = 43,576.60 : x
  2. Step 2: Convert to fraction form
    138,348.87/207,503.58 = 43,576.60/x
  3. Step 3: Cross multiply
    138,348.87x = 207,503.58 × 43,576.60
  4. Step 4: Simplify right side
    138,348.87x = 9,042,299,985.47
  5. Step 5: Solve for x
    x = 9,042,299,985.47/138,348.87
  6. Step 6: Final answer
    x = 65,358.68

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1.5x scale

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.