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Finding the Fourth Proportional to 148,855.62, 205,423.08 and 80,873.94

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Solution

The fourth proportional to 148,855.62, 205,423.08 and 80,873.94 is: 111,607.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,855.62 : 205,423.08 = 80,873.94 : x
  2. Step 2: Convert to fraction form
    148,855.62/205,423.08 = 80,873.94/x
  3. Step 3: Cross multiply
    148,855.62x = 205,423.08 × 80,873.94
  4. Step 4: Simplify right side
    148,855.62x = 16,613,372,819.42
  5. Step 5: Solve for x
    x = 16,613,372,819.42/148,855.62
  6. Step 6: Final answer
    x = 111,607.30

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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.