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Finding the Fourth Proportional to 172,372.80, 258,559.20 and 54,053.67

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Solution

The fourth proportional to 172,372.80, 258,559.20 and 54,053.67 is: 81,080.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,372.80 : 258,559.20 = 54,053.67 : x
  2. Step 2: Convert to fraction form
    172,372.80/258,559.20 = 54,053.67/x
  3. Step 3: Cross multiply
    172,372.80x = 258,559.20 × 54,053.67
  4. Step 4: Simplify right side
    172,372.80x = 13,976,073,672.26
  5. Step 5: Solve for x
    x = 13,976,073,672.26/172,372.80
  6. Step 6: Final answer
    x = 81,080.51

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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.