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Finding the Fourth Proportional to 159,165.17, 219,648.04 and 87,550.64

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Solution

The fourth proportional to 159,165.17, 219,648.04 and 87,550.64 is: 120,819.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,165.17 : 219,648.04 = 87,550.64 : x
  2. Step 2: Convert to fraction form
    159,165.17/219,648.04 = 87,550.64/x
  3. Step 3: Cross multiply
    159,165.17x = 219,648.04 × 87,550.64
  4. Step 4: Simplify right side
    159,165.17x = 19,230,326,476.75
  5. Step 5: Solve for x
    x = 19,230,326,476.75/159,165.17
  6. Step 6: Final answer
    x = 120,819.94

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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.