Home / 143,542.83-198,080.69-83,109.19

Finding the Fourth Proportional to 143,542.83, 198,080.69 and 83,109.19

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Solution

The fourth proportional to 143,542.83, 198,080.69 and 83,109.19 is: 114,685.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,542.83 : 198,080.69 = 83,109.19 : x
  2. Step 2: Convert to fraction form
    143,542.83/198,080.69 = 83,109.19/x
  3. Step 3: Cross multiply
    143,542.83x = 198,080.69 × 83,109.19
  4. Step 4: Simplify right side
    143,542.83x = 16,462,325,628.68
  5. Step 5: Solve for x
    x = 16,462,325,628.68/143,542.83
  6. Step 6: Final answer
    x = 114,685.81

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1.5x scale

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.