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Finding the Fourth Proportional to 178,171.20, 267,256.80 and 84,859.20

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Solution

The fourth proportional to 178,171.20, 267,256.80 and 84,859.20 is: 127,288.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,171.20 : 267,256.80 = 84,859.20 : x
  2. Step 2: Convert to fraction form
    178,171.20/267,256.80 = 84,859.20/x
  3. Step 3: Cross multiply
    178,171.20x = 267,256.80 × 84,859.20
  4. Step 4: Simplify right side
    178,171.20x = 22,679,198,242.56
  5. Step 5: Solve for x
    x = 22,679,198,242.56/178,171.20
  6. Step 6: Final answer
    x = 127,288.80

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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.