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Finding the Fourth Proportional to 138,355.68, 207,528.60 and 44,859

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Solution

The fourth proportional to 138,355.68, 207,528.60 and 44,859 is: 67,286.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,355.68 : 207,528.60 = 44,859 : x
  2. Step 2: Convert to fraction form
    138,355.68/207,528.60 = 44,859/x
  3. Step 3: Cross multiply
    138,355.68x = 207,528.60 × 44,859
  4. Step 4: Simplify right side
    138,355.68x = 9,309,525,467.40
  5. Step 5: Solve for x
    x = 9,309,525,467.40/138,355.68
  6. Step 6: Final answer
    x = 67,286.90

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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.