Home / 143,634.55-198,223.86-86,291.41

Finding the Fourth Proportional to 143,634.55, 198,223.86 and 86,291.41

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Solution

The fourth proportional to 143,634.55, 198,223.86 and 86,291.41 is: 119,087.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,634.55 : 198,223.86 = 86,291.41 : x
  2. Step 2: Convert to fraction form
    143,634.55/198,223.86 = 86,291.41/x
  3. Step 3: Cross multiply
    143,634.55x = 198,223.86 × 86,291.41
  4. Step 4: Simplify right side
    143,634.55x = 17,105,016,375.04
  5. Step 5: Solve for x
    x = 17,105,016,375.04/143,634.55
  6. Step 6: Final answer
    x = 119,087.06

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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.