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Finding the Fourth Proportional to 149,650.53, 206,522.08 and 81,671.87

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Solution

The fourth proportional to 149,650.53, 206,522.08 and 81,671.87 is: 112,709.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,650.53 : 206,522.08 = 81,671.87 : x
  2. Step 2: Convert to fraction form
    149,650.53/206,522.08 = 81,671.87/x
  3. Step 3: Cross multiply
    149,650.53x = 206,522.08 × 81,671.87
  4. Step 4: Simplify right side
    149,650.53x = 16,867,044,061.53
  5. Step 5: Solve for x
    x = 16,867,044,061.53/149,650.53
  6. Step 6: Final answer
    x = 112,709.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.