Home / 103,425.12-155,129.04-41,078.88

Finding the Fourth Proportional to 103,425.12, 155,129.04 and 41,078.88

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Solution

The fourth proportional to 103,425.12, 155,129.04 and 41,078.88 is: 61,614.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,425.12 : 155,129.04 = 41,078.88 : x
  2. Step 2: Convert to fraction form
    103,425.12/155,129.04 = 41,078.88/x
  3. Step 3: Cross multiply
    103,425.12x = 155,129.04 × 41,078.88
  4. Step 4: Simplify right side
    103,425.12x = 6,372,527,218.68
  5. Step 5: Solve for x
    x = 6,372,527,218.68/103,425.12
  6. Step 6: Final answer
    x = 61,614.89

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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.