Home / 204,025.30-306,037.95-85,830.10

Finding the Fourth Proportional to 204,025.30, 306,037.95 and 85,830.10

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Solution

The fourth proportional to 204,025.30, 306,037.95 and 85,830.10 is: 128,745.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,025.30 : 306,037.95 = 85,830.10 : x
  2. Step 2: Convert to fraction form
    204,025.30/306,037.95 = 85,830.10/x
  3. Step 3: Cross multiply
    204,025.30x = 306,037.95 × 85,830.10
  4. Step 4: Simplify right side
    204,025.30x = 26,267,267,852.30
  5. Step 5: Solve for x
    x = 26,267,267,852.30/204,025.30
  6. Step 6: Final answer
    x = 128,745.15

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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.