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Finding the Fourth Proportional to 138,142.88, 207,168.75 and 44,626.76

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Solution

The fourth proportional to 138,142.88, 207,168.75 and 44,626.76 is: 66,925.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,142.88 : 207,168.75 = 44,626.76 : x
  2. Step 2: Convert to fraction form
    138,142.88/207,168.75 = 44,626.76/x
  3. Step 3: Cross multiply
    138,142.88x = 207,168.75 × 44,626.76
  4. Step 4: Simplify right side
    138,142.88x = 9,245,269,049.91
  5. Step 5: Solve for x
    x = 9,245,269,049.91/138,142.88
  6. Step 6: Final answer
    x = 66,925.41

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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.