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Finding the Fourth Proportional to 159,301.17, 219,835.68 and 87,680.68

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Solution

The fourth proportional to 159,301.17, 219,835.68 and 87,680.68 is: 120,999.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,301.17 : 219,835.68 = 87,680.68 : x
  2. Step 2: Convert to fraction form
    159,301.17/219,835.68 = 87,680.68/x
  3. Step 3: Cross multiply
    159,301.17x = 219,835.68 × 87,680.68
  4. Step 4: Simplify right side
    159,301.17x = 19,275,341,910.66
  5. Step 5: Solve for x
    x = 19,275,341,910.66/159,301.17
  6. Step 6: Final answer
    x = 120,999.37

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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.