Home / 204,080.20-306,266.10-85,836.40

Finding the Fourth Proportional to 204,080.20, 306,266.10 and 85,836.40

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Solution

The fourth proportional to 204,080.20, 306,266.10 and 85,836.40 is: 128,815.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,080.20 : 306,266.10 = 85,836.40 : x
  2. Step 2: Convert to fraction form
    204,080.20/306,266.10 = 85,836.40/x
  3. Step 3: Cross multiply
    204,080.20x = 306,266.10 × 85,836.40
  4. Step 4: Simplify right side
    204,080.20x = 26,288,779,466.04
  5. Step 5: Solve for x
    x = 26,288,779,466.04/204,080.20
  6. Step 6: Final answer
    x = 128,815.92

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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.