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Finding the Fourth Proportional to 159,592.13, 220,238.64 and 87,974.72

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Solution

The fourth proportional to 159,592.13, 220,238.64 and 87,974.72 is: 121,405.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,592.13 : 220,238.64 = 87,974.72 : x
  2. Step 2: Convert to fraction form
    159,592.13/220,238.64 = 87,974.72/x
  3. Step 3: Cross multiply
    159,592.13x = 220,238.64 × 87,974.72
  4. Step 4: Simplify right side
    159,592.13x = 19,375,431,585.99
  5. Step 5: Solve for x
    x = 19,375,431,585.99/159,592.13
  6. Step 6: Final answer
    x = 121,405.94

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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.