Home / 145,849.20-218,773.80-123,979.20

Finding the Fourth Proportional to 145,849.20, 218,773.80 and 123,979.20

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Solution

The fourth proportional to 145,849.20, 218,773.80 and 123,979.20 is: 185,968.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,849.20 : 218,773.80 = 123,979.20 : x
  2. Step 2: Convert to fraction form
    145,849.20/218,773.80 = 123,979.20/x
  3. Step 3: Cross multiply
    145,849.20x = 218,773.80 × 123,979.20
  4. Step 4: Simplify right side
    145,849.20x = 27,123,400,704.96
  5. Step 5: Solve for x
    x = 27,123,400,704.96/145,849.20
  6. Step 6: Final answer
    x = 185,968.80

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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.