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Finding the Fourth Proportional to 119,898.72, 179,809.17 and 39,915.21

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Solution

The fourth proportional to 119,898.72, 179,809.17 and 39,915.21 is: 59,859.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,898.72 : 179,809.17 = 39,915.21 : x
  2. Step 2: Convert to fraction form
    119,898.72/179,809.17 = 39,915.21/x
  3. Step 3: Cross multiply
    119,898.72x = 179,809.17 × 39,915.21
  4. Step 4: Simplify right side
    119,898.72x = 7,177,120,780.48
  5. Step 5: Solve for x
    x = 7,177,120,780.48/119,898.72
  6. Step 6: Final answer
    x = 59,859.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.