Home / 109,520.40-164,086.20-67,918.80

Finding the Fourth Proportional to 109,520.40, 164,086.20 and 67,918.80

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Solution

The fourth proportional to 109,520.40, 164,086.20 and 67,918.80 is: 101,757.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,520.40 : 164,086.20 = 67,918.80 : x
  2. Step 2: Convert to fraction form
    109,520.40/164,086.20 = 67,918.80/x
  3. Step 3: Cross multiply
    109,520.40x = 164,086.20 × 67,918.80
  4. Step 4: Simplify right side
    109,520.40x = 11,144,537,800.56
  5. Step 5: Solve for x
    x = 11,144,537,800.56/109,520.40
  6. Step 6: Final answer
    x = 101,757.64

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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.