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Finding the Fourth Proportional to 172,381.20, 258,596.10 and 54,040.20

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Solution

The fourth proportional to 172,381.20, 258,596.10 and 54,040.20 is: 81,067.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,381.20 : 258,596.10 = 54,040.20 : x
  2. Step 2: Convert to fraction form
    172,381.20/258,596.10 = 54,040.20/x
  3. Step 3: Cross multiply
    172,381.20x = 258,596.10 × 54,040.20
  4. Step 4: Simplify right side
    172,381.20x = 13,974,584,963.22
  5. Step 5: Solve for x
    x = 13,974,584,963.22/172,381.20
  6. Step 6: Final answer
    x = 81,067.92

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1.5x scale

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.