Home / 115,000.20-172,449.10-52,689.80

Finding the Fourth Proportional to 115,000.20, 172,449.10 and 52,689.80

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Solution

The fourth proportional to 115,000.20, 172,449.10 and 52,689.80 is: 79,011.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,000.20 : 172,449.10 = 52,689.80 : x
  2. Step 2: Convert to fraction form
    115,000.20/172,449.10 = 52,689.80/x
  3. Step 3: Cross multiply
    115,000.20x = 172,449.10 × 52,689.80
  4. Step 4: Simplify right side
    115,000.20x = 9,086,308,589.18
  5. Step 5: Solve for x
    x = 9,086,308,589.18/115,000.20
  6. Step 6: Final answer
    x = 79,011.24

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1.5x scale

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.