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Finding the Fourth Proportional to 119,168.78, 178,753.01 and 30,422.28

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Solution

The fourth proportional to 119,168.78, 178,753.01 and 30,422.28 is: 45,633.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,168.78 : 178,753.01 = 30,422.28 : x
  2. Step 2: Convert to fraction form
    119,168.78/178,753.01 = 30,422.28/x
  3. Step 3: Cross multiply
    119,168.78x = 178,753.01 × 30,422.28
  4. Step 4: Simplify right side
    119,168.78x = 5,438,074,121.06
  5. Step 5: Solve for x
    x = 5,438,074,121.06/119,168.78
  6. Step 6: Final answer
    x = 45,633.38

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1.5x scale

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.