Home / 206,863.60-310,381.80-66,665.20

Finding the Fourth Proportional to 206,863.60, 310,381.80 and 66,665.20

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Solution

The fourth proportional to 206,863.60, 310,381.80 and 66,665.20 is: 100,025.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,863.60 : 310,381.80 = 66,665.20 : x
  2. Step 2: Convert to fraction form
    206,863.60/310,381.80 = 66,665.20/x
  3. Step 3: Cross multiply
    206,863.60x = 310,381.80 × 66,665.20
  4. Step 4: Simplify right side
    206,863.60x = 20,691,664,773.36
  5. Step 5: Solve for x
    x = 20,691,664,773.36/206,863.60
  6. Step 6: Final answer
    x = 100,025.64

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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.