Home / 129,523.28-178,745.16-72,166.46

Finding the Fourth Proportional to 129,523.28, 178,745.16 and 72,166.46

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Solution

The fourth proportional to 129,523.28, 178,745.16 and 72,166.46 is: 99,591.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,523.28 : 178,745.16 = 72,166.46 : x
  2. Step 2: Convert to fraction form
    129,523.28/178,745.16 = 72,166.46/x
  3. Step 3: Cross multiply
    129,523.28x = 178,745.16 × 72,166.46
  4. Step 4: Simplify right side
    129,523.28x = 12,899,405,439.33
  5. Step 5: Solve for x
    x = 12,899,405,439.33/129,523.28
  6. Step 6: Final answer
    x = 99,591.41

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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.