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Finding the Fourth Proportional to 159,393.69, 219,963.24 and 87,773.54

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Solution

The fourth proportional to 159,393.69, 219,963.24 and 87,773.54 is: 121,127.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,393.69 : 219,963.24 = 87,773.54 : x
  2. Step 2: Convert to fraction form
    159,393.69/219,963.24 = 87,773.54/x
  3. Step 3: Cross multiply
    159,393.69x = 219,963.24 × 87,773.54
  4. Step 4: Simplify right side
    159,393.69x = 19,306,951,144.85
  5. Step 5: Solve for x
    x = 19,306,951,144.85/159,393.69
  6. Step 6: Final answer
    x = 121,127.45

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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.