Home / 112,517.37-155,221.11-80,259.12

Finding the Fourth Proportional to 112,517.37, 155,221.11 and 80,259.12

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Solution

The fourth proportional to 112,517.37, 155,221.11 and 80,259.12 is: 110,719.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,517.37 : 155,221.11 = 80,259.12 : x
  2. Step 2: Convert to fraction form
    112,517.37/155,221.11 = 80,259.12/x
  3. Step 3: Cross multiply
    112,517.37x = 155,221.11 × 80,259.12
  4. Step 4: Simplify right side
    112,517.37x = 12,457,909,694.02
  5. Step 5: Solve for x
    x = 12,457,909,694.02/112,517.37
  6. Step 6: Final answer
    x = 110,719.88

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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.