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Finding the Fourth Proportional to 159,150, 219,628.82 and 87,531.20

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Solution

The fourth proportional to 159,150, 219,628.82 and 87,531.20 is: 120,794.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,150 : 219,628.82 = 87,531.20 : x
  2. Step 2: Convert to fraction form
    159,150/219,628.82 = 87,531.20/x
  3. Step 3: Cross multiply
    159,150x = 219,628.82 × 87,531.20
  4. Step 4: Simplify right side
    159,150x = 19,224,374,169.18
  5. Step 5: Solve for x
    x = 19,224,374,169.18/159,150
  6. Step 6: Final answer
    x = 120,794.06

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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.