Home / 172,909.32-258,859.56-106,147.08

Finding the Fourth Proportional to 172,909.32, 258,859.56 and 106,147.08

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Solution

The fourth proportional to 172,909.32, 258,859.56 and 106,147.08 is: 158,910.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,909.32 : 258,859.56 = 106,147.08 : x
  2. Step 2: Convert to fraction form
    172,909.32/258,859.56 = 106,147.08/x
  3. Step 3: Cross multiply
    172,909.32x = 258,859.56 × 106,147.08
  4. Step 4: Simplify right side
    172,909.32x = 27,477,186,424.08
  5. Step 5: Solve for x
    x = 27,477,186,424.08/172,909.32
  6. Step 6: Final answer
    x = 158,910.96

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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.