Home / 113,226.05-156,286.77-72,939.69

Finding the Fourth Proportional to 113,226.05, 156,286.77 and 72,939.69

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Solution

The fourth proportional to 113,226.05, 156,286.77 and 72,939.69 is: 100,679.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,226.05 : 156,286.77 = 72,939.69 : x
  2. Step 2: Convert to fraction form
    113,226.05/156,286.77 = 72,939.69/x
  3. Step 3: Cross multiply
    113,226.05x = 156,286.77 × 72,939.69
  4. Step 4: Simplify right side
    113,226.05x = 11,399,508,281.38
  5. Step 5: Solve for x
    x = 11,399,508,281.38/113,226.05
  6. Step 6: Final answer
    x = 100,679.20

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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.