Home / 203,156.87-280,447.97-130,665.11

Finding the Fourth Proportional to 203,156.87, 280,447.97 and 130,665.11

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Solution

The fourth proportional to 203,156.87, 280,447.97 and 130,665.11 is: 180,376.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,156.87 : 280,447.97 = 130,665.11 : x
  2. Step 2: Convert to fraction form
    203,156.87/280,447.97 = 130,665.11/x
  3. Step 3: Cross multiply
    203,156.87x = 280,447.97 × 130,665.11
  4. Step 4: Simplify right side
    203,156.87x = 36,644,762,793.76
  5. Step 5: Solve for x
    x = 36,644,762,793.76/203,156.87
  6. Step 6: Final answer
    x = 180,376.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.