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Finding the Fourth Proportional to 172,347.18, 258,524.01 and 54,015.90

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Solution

The fourth proportional to 172,347.18, 258,524.01 and 54,015.90 is: 81,024.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,347.18 : 258,524.01 = 54,015.90 : x
  2. Step 2: Convert to fraction form
    172,347.18/258,524.01 = 54,015.90/x
  3. Step 3: Cross multiply
    172,347.18x = 258,524.01 × 54,015.90
  4. Step 4: Simplify right side
    172,347.18x = 13,964,407,071.76
  5. Step 5: Solve for x
    x = 13,964,407,071.76/172,347.18
  6. Step 6: Final answer
    x = 81,024.87

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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.