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Finding the Fourth Proportional to 146,021.70, 218,981.35 and 75,877.70

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Solution

The fourth proportional to 146,021.70, 218,981.35 and 75,877.70 is: 113,789.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,021.70 : 218,981.35 = 75,877.70 : x
  2. Step 2: Convert to fraction form
    146,021.70/218,981.35 = 75,877.70/x
  3. Step 3: Cross multiply
    146,021.70x = 218,981.35 × 75,877.70
  4. Step 4: Simplify right side
    146,021.70x = 16,615,801,180.90
  5. Step 5: Solve for x
    x = 16,615,801,180.90/146,021.70
  6. Step 6: Final answer
    x = 113,789.94

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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.