Home / 113,169.39-156,115.19-76,872.70

Finding the Fourth Proportional to 113,169.39, 156,115.19 and 76,872.70

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Solution

The fourth proportional to 113,169.39, 156,115.19 and 76,872.70 is: 106,044.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,169.39 : 156,115.19 = 76,872.70 : x
  2. Step 2: Convert to fraction form
    113,169.39/156,115.19 = 76,872.70/x
  3. Step 3: Cross multiply
    113,169.39x = 156,115.19 × 76,872.70
  4. Step 4: Simplify right side
    113,169.39x = 12,000,996,166.31
  5. Step 5: Solve for x
    x = 12,000,996,166.31/113,169.39
  6. Step 6: Final answer
    x = 106,044.54

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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.