Home / 225,887.13-311,718.63-129,084.84

Finding the Fourth Proportional to 225,887.13, 311,718.63 and 129,084.84

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Solution

The fourth proportional to 225,887.13, 311,718.63 and 129,084.84 is: 178,133.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,887.13 : 311,718.63 = 129,084.84 : x
  2. Step 2: Convert to fraction form
    225,887.13/311,718.63 = 129,084.84/x
  3. Step 3: Cross multiply
    225,887.13x = 311,718.63 × 129,084.84
  4. Step 4: Simplify right side
    225,887.13x = 40,238,149,478.57
  5. Step 5: Solve for x
    x = 40,238,149,478.57/225,887.13
  6. Step 6: Final answer
    x = 178,133.87

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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.