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Finding the Fourth Proportional to 159,271.52, 219,789.90 and 87,651.44

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Solution

The fourth proportional to 159,271.52, 219,789.90 and 87,651.44 is: 120,956.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,271.52 : 219,789.90 = 87,651.44 : x
  2. Step 2: Convert to fraction form
    159,271.52/219,789.90 = 87,651.44/x
  3. Step 3: Cross multiply
    159,271.52x = 219,789.90 × 87,651.44
  4. Step 4: Simplify right side
    159,271.52x = 19,264,901,232.46
  5. Step 5: Solve for x
    x = 19,264,901,232.46/159,271.52
  6. Step 6: Final answer
    x = 120,956.35

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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.