Home / 103,633.20-143,039.16-67,909.68

Finding the Fourth Proportional to 103,633.20, 143,039.16 and 67,909.68

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Solution

The fourth proportional to 103,633.20, 143,039.16 and 67,909.68 is: 93,731.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,633.20 : 143,039.16 = 67,909.68 : x
  2. Step 2: Convert to fraction form
    103,633.20/143,039.16 = 67,909.68/x
  3. Step 3: Cross multiply
    103,633.20x = 143,039.16 × 67,909.68
  4. Step 4: Simplify right side
    103,633.20x = 9,713,743,583.07
  5. Step 5: Solve for x
    x = 9,713,743,583.07/103,633.20
  6. Step 6: Final answer
    x = 93,731.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.