Home / 143,739.97-198,361.10-83,345.76

Finding the Fourth Proportional to 143,739.97, 198,361.10 and 83,345.76

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Solution

The fourth proportional to 143,739.97, 198,361.10 and 83,345.76 is: 115,017.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,739.97 : 198,361.10 = 83,345.76 : x
  2. Step 2: Convert to fraction form
    143,739.97/198,361.10 = 83,345.76/x
  3. Step 3: Cross multiply
    143,739.97x = 198,361.10 × 83,345.76
  4. Step 4: Simplify right side
    143,739.97x = 16,532,556,842.30
  5. Step 5: Solve for x
    x = 16,532,556,842.30/143,739.97
  6. Step 6: Final answer
    x = 115,017.12

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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.