Home / 107,949.40-161,729.70-66,347.80

Finding the Fourth Proportional to 107,949.40, 161,729.70 and 66,347.80

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Solution

The fourth proportional to 107,949.40, 161,729.70 and 66,347.80 is: 99,402.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,949.40 : 161,729.70 = 66,347.80 : x
  2. Step 2: Convert to fraction form
    107,949.40/161,729.70 = 66,347.80/x
  3. Step 3: Cross multiply
    107,949.40x = 161,729.70 × 66,347.80
  4. Step 4: Simplify right side
    107,949.40x = 10,730,409,789.66
  5. Step 5: Solve for x
    x = 10,730,409,789.66/107,949.40
  6. Step 6: Final answer
    x = 99,402.22

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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.