Home / 203,178.23-280,388.33-112,535.78

Finding the Fourth Proportional to 203,178.23, 280,388.33 and 112,535.78

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Solution

The fourth proportional to 203,178.23, 280,388.33 and 112,535.78 is: 155,300.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,178.23 : 280,388.33 = 112,535.78 : x
  2. Step 2: Convert to fraction form
    203,178.23/280,388.33 = 112,535.78/x
  3. Step 3: Cross multiply
    203,178.23x = 280,388.33 × 112,535.78
  4. Step 4: Simplify right side
    203,178.23x = 31,553,720,401.76
  5. Step 5: Solve for x
    x = 31,553,720,401.76/203,178.23
  6. Step 6: Final answer
    x = 155,300.70

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1.5x scale

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.