Home / 206,974.11-310,559.16-87,057.30

Finding the Fourth Proportional to 206,974.11, 310,559.16 and 87,057.30

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Solution

The fourth proportional to 206,974.11, 310,559.16 and 87,057.30 is: 130,627.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,974.11 : 310,559.16 = 87,057.30 : x
  2. Step 2: Convert to fraction form
    206,974.11/310,559.16 = 87,057.30/x
  3. Step 3: Cross multiply
    206,974.11x = 310,559.16 × 87,057.30
  4. Step 4: Simplify right side
    206,974.11x = 27,036,441,959.87
  5. Step 5: Solve for x
    x = 27,036,441,959.87/206,974.11
  6. Step 6: Final answer
    x = 130,627.17

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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.