Home / 106,720.60-159,870.30-54,167.80

Finding the Fourth Proportional to 106,720.60, 159,870.30 and 54,167.80

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Solution

The fourth proportional to 106,720.60, 159,870.30 and 54,167.80 is: 81,144.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,720.60 : 159,870.30 = 54,167.80 : x
  2. Step 2: Convert to fraction form
    106,720.60/159,870.30 = 54,167.80/x
  3. Step 3: Cross multiply
    106,720.60x = 159,870.30 × 54,167.80
  4. Step 4: Simplify right side
    106,720.60x = 8,659,822,436.34
  5. Step 5: Solve for x
    x = 8,659,822,436.34/106,720.60
  6. Step 6: Final answer
    x = 81,144.81

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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.