Home / 115,729.20-173,651.40-45,610.80

Finding the Fourth Proportional to 115,729.20, 173,651.40 and 45,610.80

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Solution

The fourth proportional to 115,729.20, 173,651.40 and 45,610.80 is: 68,438.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,729.20 : 173,651.40 = 45,610.80 : x
  2. Step 2: Convert to fraction form
    115,729.20/173,651.40 = 45,610.80/x
  3. Step 3: Cross multiply
    115,729.20x = 173,651.40 × 45,610.80
  4. Step 4: Simplify right side
    115,729.20x = 7,920,379,275.12
  5. Step 5: Solve for x
    x = 7,920,379,275.12/115,729.20
  6. Step 6: Final answer
    x = 68,438.90

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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.