Home / 172,319.12-258,544.56-67,211.36

Finding the Fourth Proportional to 172,319.12, 258,544.56 and 67,211.36

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Solution

The fourth proportional to 172,319.12, 258,544.56 and 67,211.36 is: 100,842.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,319.12 : 258,544.56 = 67,211.36 : x
  2. Step 2: Convert to fraction form
    172,319.12/258,544.56 = 67,211.36/x
  3. Step 3: Cross multiply
    172,319.12x = 258,544.56 × 67,211.36
  4. Step 4: Simplify right side
    172,319.12x = 17,377,131,498.20
  5. Step 5: Solve for x
    x = 17,377,131,498.20/172,319.12
  6. Step 6: Final answer
    x = 100,842.74

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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.