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Finding the Fourth Proportional to 159,323.64, 219,872.91 and 87,710.33

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Solution

The fourth proportional to 159,323.64, 219,872.91 and 87,710.33 is: 121,043.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,323.64 : 219,872.91 = 87,710.33 : x
  2. Step 2: Convert to fraction form
    159,323.64/219,872.91 = 87,710.33/x
  3. Step 3: Cross multiply
    159,323.64x = 219,872.91 × 87,710.33
  4. Step 4: Simplify right side
    159,323.64x = 19,285,124,394.80
  5. Step 5: Solve for x
    x = 19,285,124,394.80/159,323.64
  6. Step 6: Final answer
    x = 121,043.71

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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.