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Finding the Fourth Proportional to 145,687.10, 218,617.05 and 95,909.90

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Solution

The fourth proportional to 145,687.10, 218,617.05 and 95,909.90 is: 143,921.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,687.10 : 218,617.05 = 95,909.90 : x
  2. Step 2: Convert to fraction form
    145,687.10/218,617.05 = 95,909.90/x
  3. Step 3: Cross multiply
    145,687.10x = 218,617.05 × 95,909.90
  4. Step 4: Simplify right side
    145,687.10x = 20,967,539,403.80
  5. Step 5: Solve for x
    x = 20,967,539,403.80/145,687.10
  6. Step 6: Final answer
    x = 143,921.73

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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.