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Finding the Fourth Proportional to 250,045.89, 375,080.93 and 81,565.89

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Solution

The fourth proportional to 250,045.89, 375,080.93 and 81,565.89 is: 122,352.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,045.89 : 375,080.93 = 81,565.89 : x
  2. Step 2: Convert to fraction form
    250,045.89/375,080.93 = 81,565.89/x
  3. Step 3: Cross multiply
    250,045.89x = 375,080.93 × 81,565.89
  4. Step 4: Simplify right side
    250,045.89x = 30,593,809,469.65
  5. Step 5: Solve for x
    x = 30,593,809,469.65/250,045.89
  6. Step 6: Final answer
    x = 122,352.78

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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.