Home / 204,078.30-306,166.05-85,688.70

Finding the Fourth Proportional to 204,078.30, 306,166.05 and 85,688.70

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Solution

The fourth proportional to 204,078.30, 306,166.05 and 85,688.70 is: 128,553.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,078.30 : 306,166.05 = 85,688.70 : x
  2. Step 2: Convert to fraction form
    204,078.30/306,166.05 = 85,688.70/x
  3. Step 3: Cross multiply
    204,078.30x = 306,166.05 × 85,688.70
  4. Step 4: Simplify right side
    204,078.30x = 26,234,970,808.64
  5. Step 5: Solve for x
    x = 26,234,970,808.64/204,078.30
  6. Step 6: Final answer
    x = 128,553.46

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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.