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Finding the Fourth Proportional to 148,376, 204,758.90 and 81,306.56

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Solution

The fourth proportional to 148,376, 204,758.90 and 81,306.56 is: 112,203.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,376 : 204,758.90 = 81,306.56 : x
  2. Step 2: Convert to fraction form
    148,376/204,758.90 = 81,306.56/x
  3. Step 3: Cross multiply
    148,376x = 204,758.90 × 81,306.56
  4. Step 4: Simplify right side
    148,376x = 16,648,241,788.38
  5. Step 5: Solve for x
    x = 16,648,241,788.38/148,376
  6. Step 6: Final answer
    x = 112,203.06

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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.