Home / 106,721.40-159,909.30-67,207.80

Finding the Fourth Proportional to 106,721.40, 159,909.30 and 67,207.80

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Solution

The fourth proportional to 106,721.40, 159,909.30 and 67,207.80 is: 100,702.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,721.40 : 159,909.30 = 67,207.80 : x
  2. Step 2: Convert to fraction form
    106,721.40/159,909.30 = 67,207.80/x
  3. Step 3: Cross multiply
    106,721.40x = 159,909.30 × 67,207.80
  4. Step 4: Simplify right side
    106,721.40x = 10,747,152,252.54
  5. Step 5: Solve for x
    x = 10,747,152,252.54/106,721.40
  6. Step 6: Final answer
    x = 100,702.88

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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.