Home / 206,868.13-310,302.20-66,626.75

Finding the Fourth Proportional to 206,868.13, 310,302.20 and 66,626.75

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Solution

The fourth proportional to 206,868.13, 310,302.20 and 66,626.75 is: 99,940.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,868.13 : 310,302.20 = 66,626.75 : x
  2. Step 2: Convert to fraction form
    206,868.13/310,302.20 = 66,626.75/x
  3. Step 3: Cross multiply
    206,868.13x = 310,302.20 × 66,626.75
  4. Step 4: Simplify right side
    206,868.13x = 20,674,427,103.85
  5. Step 5: Solve for x
    x = 20,674,427,103.85/206,868.13
  6. Step 6: Final answer
    x = 99,940.13

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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.