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Finding the Fourth Proportional to 128,354.80, 192,545.06 and 44,103.86

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Solution

The fourth proportional to 128,354.80, 192,545.06 and 44,103.86 is: 66,160.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,354.80 : 192,545.06 = 44,103.86 : x
  2. Step 2: Convert to fraction form
    128,354.80/192,545.06 = 44,103.86/x
  3. Step 3: Cross multiply
    128,354.80x = 192,545.06 × 44,103.86
  4. Step 4: Simplify right side
    128,354.80x = 8,491,980,369.93
  5. Step 5: Solve for x
    x = 8,491,980,369.93/128,354.80
  6. Step 6: Final answer
    x = 66,160.21

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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.