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Finding the Fourth Proportional to 143,716.88, 198,169.80 and 117,796.88

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Solution

The fourth proportional to 143,716.88, 198,169.80 and 117,796.88 is: 162,428.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,716.88 : 198,169.80 = 117,796.88 : x
  2. Step 2: Convert to fraction form
    143,716.88/198,169.80 = 117,796.88/x
  3. Step 3: Cross multiply
    143,716.88x = 198,169.80 × 117,796.88
  4. Step 4: Simplify right side
    143,716.88x = 23,343,784,150.22
  5. Step 5: Solve for x
    x = 23,343,784,150.22/143,716.88
  6. Step 6: Final answer
    x = 162,428.97

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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.