Home / 109,982.20-164,973.30-100,140.70

Finding the Fourth Proportional to 109,982.20, 164,973.30 and 100,140.70

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Solution

The fourth proportional to 109,982.20, 164,973.30 and 100,140.70 is: 150,211.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,982.20 : 164,973.30 = 100,140.70 : x
  2. Step 2: Convert to fraction form
    109,982.20/164,973.30 = 100,140.70/x
  3. Step 3: Cross multiply
    109,982.20x = 164,973.30 × 100,140.70
  4. Step 4: Simplify right side
    109,982.20x = 16,520,541,743.31
  5. Step 5: Solve for x
    x = 16,520,541,743.31/109,982.20
  6. Step 6: Final answer
    x = 150,211.05

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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.