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Finding the Fourth Proportional to 159,142.52, 219,622.26 and 87,528.04

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Solution

The fourth proportional to 159,142.52, 219,622.26 and 87,528.04 is: 120,791.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,142.52 : 219,622.26 = 87,528.04 : x
  2. Step 2: Convert to fraction form
    159,142.52/219,622.26 = 87,528.04/x
  3. Step 3: Cross multiply
    159,142.52x = 219,622.26 × 87,528.04
  4. Step 4: Simplify right side
    159,142.52x = 19,223,105,958.17
  5. Step 5: Solve for x
    x = 19,223,105,958.17/159,142.52
  6. Step 6: Final answer
    x = 120,791.77

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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.