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Finding the Fourth Proportional to 159,091.53, 219,546.35 and 87,476.39

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Solution

The fourth proportional to 159,091.53, 219,546.35 and 87,476.39 is: 120,717.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,091.53 : 219,546.35 = 87,476.39 : x
  2. Step 2: Convert to fraction form
    159,091.53/219,546.35 = 87,476.39/x
  3. Step 3: Cross multiply
    159,091.53x = 219,546.35 × 87,476.39
  4. Step 4: Simplify right side
    159,091.53x = 19,205,120,600.56
  5. Step 5: Solve for x
    x = 19,205,120,600.56/159,091.53
  6. Step 6: Final answer
    x = 120,717.43

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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.