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Finding the Fourth Proportional to 172,437.92, 258,667.82 and 54,113.94

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Solution

The fourth proportional to 172,437.92, 258,667.82 and 54,113.94 is: 81,174.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,437.92 : 258,667.82 = 54,113.94 : x
  2. Step 2: Convert to fraction form
    172,437.92/258,667.82 = 54,113.94/x
  3. Step 3: Cross multiply
    172,437.92x = 258,667.82 × 54,113.94
  4. Step 4: Simplify right side
    172,437.92x = 13,997,534,891.41
  5. Step 5: Solve for x
    x = 13,997,534,891.41/172,437.92
  6. Step 6: Final answer
    x = 81,174.34

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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.