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Finding the Fourth Proportional to 91,179.20, 136,801.20 and 44,400.80

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Solution

The fourth proportional to 91,179.20, 136,801.20 and 44,400.80 is: 66,616.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,179.20 : 136,801.20 = 44,400.80 : x
  2. Step 2: Convert to fraction form
    91,179.20/136,801.20 = 44,400.80/x
  3. Step 3: Cross multiply
    91,179.20x = 136,801.20 × 44,400.80
  4. Step 4: Simplify right side
    91,179.20x = 6,074,082,720.96
  5. Step 5: Solve for x
    x = 6,074,082,720.96/91,179.20
  6. Step 6: Final answer
    x = 66,616.98

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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.