Home / 207,498.90-311,254.38-81,134.04

Finding the Fourth Proportional to 207,498.90, 311,254.38 and 81,134.04

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Solution

The fourth proportional to 207,498.90, 311,254.38 and 81,134.04 is: 121,703.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,498.90 : 311,254.38 = 81,134.04 : x
  2. Step 2: Convert to fraction form
    207,498.90/311,254.38 = 81,134.04/x
  3. Step 3: Cross multiply
    207,498.90x = 311,254.38 × 81,134.04
  4. Step 4: Simplify right side
    207,498.90x = 25,253,325,317.10
  5. Step 5: Solve for x
    x = 25,253,325,317.10/207,498.90
  6. Step 6: Final answer
    x = 121,703.42

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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.