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Finding the Fourth Proportional to 159,189.59, 219,680.04 and 87,569.69

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Solution

The fourth proportional to 159,189.59, 219,680.04 and 87,569.69 is: 120,845.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,189.59 : 219,680.04 = 87,569.69 : x
  2. Step 2: Convert to fraction form
    159,189.59/219,680.04 = 87,569.69/x
  3. Step 3: Cross multiply
    159,189.59x = 219,680.04 × 87,569.69
  4. Step 4: Simplify right side
    159,189.59x = 19,237,311,903.59
  5. Step 5: Solve for x
    x = 19,237,311,903.59/159,189.59
  6. Step 6: Final answer
    x = 120,845.29

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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.