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Finding the Fourth Proportional to 159,354.48, 219,908.64 and 87,734.64

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Solution

The fourth proportional to 159,354.48, 219,908.64 and 87,734.64 is: 121,073.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,354.48 : 219,908.64 = 87,734.64 : x
  2. Step 2: Convert to fraction form
    159,354.48/219,908.64 = 87,734.64/x
  3. Step 3: Cross multiply
    159,354.48x = 219,908.64 × 87,734.64
  4. Step 4: Simplify right side
    159,354.48x = 19,293,605,363.29
  5. Step 5: Solve for x
    x = 19,293,605,363.29/159,354.48
  6. Step 6: Final answer
    x = 121,073.50

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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.