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Finding the Fourth Proportional to 178,138.20, 267,207.30 and 84,826.20

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Solution

The fourth proportional to 178,138.20, 267,207.30 and 84,826.20 is: 127,239.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,138.20 : 267,207.30 = 84,826.20 : x
  2. Step 2: Convert to fraction form
    178,138.20/267,207.30 = 84,826.20/x
  3. Step 3: Cross multiply
    178,138.20x = 267,207.30 × 84,826.20
  4. Step 4: Simplify right side
    178,138.20x = 22,666,179,871.26
  5. Step 5: Solve for x
    x = 22,666,179,871.26/178,138.20
  6. Step 6: Final answer
    x = 127,239.30

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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.