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Finding the Fourth Proportional to 172,553.89, 258,818.45 and 54,259.06

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Solution

The fourth proportional to 172,553.89, 258,818.45 and 54,259.06 is: 81,384.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,553.89 : 258,818.45 = 54,259.06 : x
  2. Step 2: Convert to fraction form
    172,553.89/258,818.45 = 54,259.06/x
  3. Step 3: Cross multiply
    172,553.89x = 258,818.45 × 54,259.06
  4. Step 4: Simplify right side
    172,553.89x = 14,043,245,807.66
  5. Step 5: Solve for x
    x = 14,043,245,807.66/172,553.89
  6. Step 6: Final answer
    x = 81,384.70

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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.