Home / 172,395.20-258,665.70-109,263.80

Finding the Fourth Proportional to 172,395.20, 258,665.70 and 109,263.80

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Solution

The fourth proportional to 172,395.20, 258,665.70 and 109,263.80 is: 163,941.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,395.20 : 258,665.70 = 109,263.80 : x
  2. Step 2: Convert to fraction form
    172,395.20/258,665.70 = 109,263.80/x
  3. Step 3: Cross multiply
    172,395.20x = 258,665.70 × 109,263.80
  4. Step 4: Simplify right side
    172,395.20x = 28,262,797,311.66
  5. Step 5: Solve for x
    x = 28,262,797,311.66/172,395.20
  6. Step 6: Final answer
    x = 163,941.90

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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.