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Finding the Fourth Proportional to 178,100.70, 267,064.65 and 99,131.10

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Solution

The fourth proportional to 178,100.70, 267,064.65 and 99,131.10 is: 148,648.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,100.70 : 267,064.65 = 99,131.10 : x
  2. Step 2: Convert to fraction form
    178,100.70/267,064.65 = 99,131.10/x
  3. Step 3: Cross multiply
    178,100.70x = 267,064.65 × 99,131.10
  4. Step 4: Simplify right side
    178,100.70x = 26,474,412,525.62
  5. Step 5: Solve for x
    x = 26,474,412,525.62/178,100.70
  6. Step 6: Final answer
    x = 148,648.56

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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.