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Finding the Fourth Proportional to 200,134.80, 276,145.20 and 115,279.20

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Solution

The fourth proportional to 200,134.80, 276,145.20 and 115,279.20 is: 159,061.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,134.80 : 276,145.20 = 115,279.20 : x
  2. Step 2: Convert to fraction form
    200,134.80/276,145.20 = 115,279.20/x
  3. Step 3: Cross multiply
    200,134.80x = 276,145.20 × 115,279.20
  4. Step 4: Simplify right side
    200,134.80x = 31,833,797,739.84
  5. Step 5: Solve for x
    x = 31,833,797,739.84/200,134.80
  6. Step 6: Final answer
    x = 159,061.78

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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.