Home / 204,021.30-306,031.95-85,826.10

Finding the Fourth Proportional to 204,021.30, 306,031.95 and 85,826.10

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Solution

The fourth proportional to 204,021.30, 306,031.95 and 85,826.10 is: 128,739.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,021.30 : 306,031.95 = 85,826.10 : x
  2. Step 2: Convert to fraction form
    204,021.30/306,031.95 = 85,826.10/x
  3. Step 3: Cross multiply
    204,021.30x = 306,031.95 × 85,826.10
  4. Step 4: Simplify right side
    204,021.30x = 26,265,528,743.90
  5. Step 5: Solve for x
    x = 26,265,528,743.90/204,021.30
  6. Step 6: Final answer
    x = 128,739.15

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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.