Home / 109,209.87-150,756.12-73,420.65

Finding the Fourth Proportional to 109,209.87, 150,756.12 and 73,420.65

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Solution

The fourth proportional to 109,209.87, 150,756.12 and 73,420.65 is: 101,351.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,209.87 : 150,756.12 = 73,420.65 : x
  2. Step 2: Convert to fraction form
    109,209.87/150,756.12 = 73,420.65/x
  3. Step 3: Cross multiply
    109,209.87x = 150,756.12 × 73,420.65
  4. Step 4: Simplify right side
    109,209.87x = 11,068,612,321.88
  5. Step 5: Solve for x
    x = 11,068,612,321.88/109,209.87
  6. Step 6: Final answer
    x = 101,351.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.