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Finding the Fourth Proportional to 172,554.72, 258,819.66 and 54,259.89

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Solution

The fourth proportional to 172,554.72, 258,819.66 and 54,259.89 is: 81,385.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,554.72 : 258,819.66 = 54,259.89 : x
  2. Step 2: Convert to fraction form
    172,554.72/258,819.66 = 54,259.89/x
  3. Step 3: Cross multiply
    172,554.72x = 258,819.66 × 54,259.89
  4. Step 4: Simplify right side
    172,554.72x = 14,043,526,281.44
  5. Step 5: Solve for x
    x = 14,043,526,281.44/172,554.72
  6. Step 6: Final answer
    x = 81,385.93

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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.