Home / 109,556.20-164,238.30-74,381.80

Finding the Fourth Proportional to 109,556.20, 164,238.30 and 74,381.80

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Solution

The fourth proportional to 109,556.20, 164,238.30 and 74,381.80 is: 111,507.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,556.20 : 164,238.30 = 74,381.80 : x
  2. Step 2: Convert to fraction form
    109,556.20/164,238.30 = 74,381.80/x
  3. Step 3: Cross multiply
    109,556.20x = 164,238.30 × 74,381.80
  4. Step 4: Simplify right side
    109,556.20x = 12,216,340,382.94
  5. Step 5: Solve for x
    x = 12,216,340,382.94/109,556.20
  6. Step 6: Final answer
    x = 111,507.52

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1.5x scale

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.