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Finding the Fourth Proportional to 148,845.80, 205,408.64 and 80,863.30

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Solution

The fourth proportional to 148,845.80, 205,408.64 and 80,863.30 is: 111,592.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,845.80 : 205,408.64 = 80,863.30 : x
  2. Step 2: Convert to fraction form
    148,845.80/205,408.64 = 80,863.30/x
  3. Step 3: Cross multiply
    148,845.80x = 205,408.64 × 80,863.30
  4. Step 4: Simplify right side
    148,845.80x = 16,610,020,478.91
  5. Step 5: Solve for x
    x = 16,610,020,478.91/148,845.80
  6. Step 6: Final answer
    x = 111,592.13

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1.5x scale

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.