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Finding the Fourth Proportional to 172,437.96, 258,656.52 and 54,118.56

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Solution

The fourth proportional to 172,437.96, 258,656.52 and 54,118.56 is: 81,177.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,437.96 : 258,656.52 = 54,118.56 : x
  2. Step 2: Convert to fraction form
    172,437.96/258,656.52 = 54,118.56/x
  3. Step 3: Cross multiply
    172,437.96x = 258,656.52 × 54,118.56
  4. Step 4: Simplify right side
    172,437.96x = 13,998,118,397.01
  5. Step 5: Solve for x
    x = 13,998,118,397.01/172,437.96
  6. Step 6: Final answer
    x = 81,177.71

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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.