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Finding the Fourth Proportional to 160,416.78, 240,542.11 and 85,516.80

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Solution

The fourth proportional to 160,416.78, 240,542.11 and 85,516.80 is: 128,230.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,416.78 : 240,542.11 = 85,516.80 : x
  2. Step 2: Convert to fraction form
    160,416.78/240,542.11 = 85,516.80/x
  3. Step 3: Cross multiply
    160,416.78x = 240,542.11 × 85,516.80
  4. Step 4: Simplify right side
    160,416.78x = 20,570,391,589.33
  5. Step 5: Solve for x
    x = 20,570,391,589.33/160,416.78
  6. Step 6: Final answer
    x = 128,230.92

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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.