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Finding the Fourth Proportional to 173,257.40, 259,903.11 and 72,034.54

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Solution

The fourth proportional to 173,257.40, 259,903.11 and 72,034.54 is: 108,058.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,257.40 : 259,903.11 = 72,034.54 : x
  2. Step 2: Convert to fraction form
    173,257.40/259,903.11 = 72,034.54/x
  3. Step 3: Cross multiply
    173,257.40x = 259,903.11 × 72,034.54
  4. Step 4: Simplify right side
    173,257.40x = 18,722,000,973.42
  5. Step 5: Solve for x
    x = 18,722,000,973.42/173,257.40
  6. Step 6: Final answer
    x = 108,058.88

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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.