Home / 143,806.13-198,449.69-83,382.36

Finding the Fourth Proportional to 143,806.13, 198,449.69 and 83,382.36

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Solution

The fourth proportional to 143,806.13, 198,449.69 and 83,382.36 is: 115,066.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,806.13 : 198,449.69 = 83,382.36 : x
  2. Step 2: Convert to fraction form
    143,806.13/198,449.69 = 83,382.36/x
  3. Step 3: Cross multiply
    143,806.13x = 198,449.69 × 83,382.36
  4. Step 4: Simplify right side
    143,806.13x = 16,547,203,493.47
  5. Step 5: Solve for x
    x = 16,547,203,493.47/143,806.13
  6. Step 6: Final answer
    x = 115,066.05

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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.