Home / 107,865.40-161,721.30-41,279.80

Finding the Fourth Proportional to 107,865.40, 161,721.30 and 41,279.80

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Solution

The fourth proportional to 107,865.40, 161,721.30 and 41,279.80 is: 61,890.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,865.40 : 161,721.30 = 41,279.80 : x
  2. Step 2: Convert to fraction form
    107,865.40/161,721.30 = 41,279.80/x
  3. Step 3: Cross multiply
    107,865.40x = 161,721.30 × 41,279.80
  4. Step 4: Simplify right side
    107,865.40x = 6,675,822,919.74
  5. Step 5: Solve for x
    x = 6,675,822,919.74/107,865.40
  6. Step 6: Final answer
    x = 61,890.31

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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.