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Finding the Fourth Proportional to 159,103.97, 219,564.29 and 87,488.63

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Solution

The fourth proportional to 159,103.97, 219,564.29 and 87,488.63 is: 120,734.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,103.97 : 219,564.29 = 87,488.63 : x
  2. Step 2: Convert to fraction form
    159,103.97/219,564.29 = 87,488.63/x
  3. Step 3: Cross multiply
    159,103.97x = 219,564.29 × 87,488.63
  4. Step 4: Simplify right side
    159,103.97x = 19,209,378,929.02
  5. Step 5: Solve for x
    x = 19,209,378,929.02/159,103.97
  6. Step 6: Final answer
    x = 120,734.76

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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.