Home / 103,680.20-155,540.66-47,521.69

Finding the Fourth Proportional to 103,680.20, 155,540.66 and 47,521.69

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Solution

The fourth proportional to 103,680.20, 155,540.66 and 47,521.69 is: 71,291.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,680.20 : 155,540.66 = 47,521.69 : x
  2. Step 2: Convert to fraction form
    103,680.20/155,540.66 = 47,521.69/x
  3. Step 3: Cross multiply
    103,680.20x = 155,540.66 × 47,521.69
  4. Step 4: Simplify right side
    103,680.20x = 7,391,554,400.46
  5. Step 5: Solve for x
    x = 7,391,554,400.46/103,680.20
  6. Step 6: Final answer
    x = 71,291.86

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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.