Home / 204,079.20-306,264.60-85,835.40

Finding the Fourth Proportional to 204,079.20, 306,264.60 and 85,835.40

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Solution

The fourth proportional to 204,079.20, 306,264.60 and 85,835.40 is: 128,814.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,079.20 : 306,264.60 = 85,835.40 : x
  2. Step 2: Convert to fraction form
    204,079.20/306,264.60 = 85,835.40/x
  3. Step 3: Cross multiply
    204,079.20x = 306,264.60 × 85,835.40
  4. Step 4: Simplify right side
    204,079.20x = 26,288,344,446.84
  5. Step 5: Solve for x
    x = 26,288,344,446.84/204,079.20
  6. Step 6: Final answer
    x = 128,814.42

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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.