Home / 105,965.80-158,891.10-43,642.60

Finding the Fourth Proportional to 105,965.80, 158,891.10 and 43,642.60

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Solution

The fourth proportional to 105,965.80, 158,891.10 and 43,642.60 is: 65,440.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,965.80 : 158,891.10 = 43,642.60 : x
  2. Step 2: Convert to fraction form
    105,965.80/158,891.10 = 43,642.60/x
  3. Step 3: Cross multiply
    105,965.80x = 158,891.10 × 43,642.60
  4. Step 4: Simplify right side
    105,965.80x = 6,934,420,720.86
  5. Step 5: Solve for x
    x = 6,934,420,720.86/105,965.80
  6. Step 6: Final answer
    x = 65,440.18

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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.