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Finding the Fourth Proportional to 250,161.85, 375,253.71 and 81,680.86

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Solution

The fourth proportional to 250,161.85, 375,253.71 and 81,680.86 is: 122,524.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,161.85 : 375,253.71 = 81,680.86 : x
  2. Step 2: Convert to fraction form
    250,161.85/375,253.71 = 81,680.86/x
  3. Step 3: Cross multiply
    250,161.85x = 375,253.71 × 81,680.86
  4. Step 4: Simplify right side
    250,161.85x = 30,651,045,750.99
  5. Step 5: Solve for x
    x = 30,651,045,750.99/250,161.85
  6. Step 6: Final answer
    x = 122,524.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.