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Finding the Fourth Proportional to 143,602.93, 198,171.97 and 79,955.76

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Solution

The fourth proportional to 143,602.93, 198,171.97 and 79,955.76 is: 110,338.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,602.93 : 198,171.97 = 79,955.76 : x
  2. Step 2: Convert to fraction form
    143,602.93/198,171.97 = 79,955.76/x
  3. Step 3: Cross multiply
    143,602.93x = 198,171.97 × 79,955.76
  4. Step 4: Simplify right side
    143,602.93x = 15,844,990,272.16
  5. Step 5: Solve for x
    x = 15,844,990,272.16/143,602.93
  6. Step 6: Final answer
    x = 110,338.91

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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.