Home / 106,720.80-159,969.96-40,115.04

Finding the Fourth Proportional to 106,720.80, 159,969.96 and 40,115.04

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Solution

The fourth proportional to 106,720.80, 159,969.96 and 40,115.04 is: 60,130.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,720.80 : 159,969.96 = 40,115.04 : x
  2. Step 2: Convert to fraction form
    106,720.80/159,969.96 = 40,115.04/x
  3. Step 3: Cross multiply
    106,720.80x = 159,969.96 × 40,115.04
  4. Step 4: Simplify right side
    106,720.80x = 6,417,201,344.20
  5. Step 5: Solve for x
    x = 6,417,201,344.20/106,720.80
  6. Step 6: Final answer
    x = 60,130.75

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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.