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Finding the Fourth Proportional to 143,655.84, 198,258.84 and 79,993.62

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Solution

The fourth proportional to 143,655.84, 198,258.84 and 79,993.62 is: 110,398.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,655.84 : 198,258.84 = 79,993.62 : x
  2. Step 2: Convert to fraction form
    143,655.84/198,258.84 = 79,993.62/x
  3. Step 3: Cross multiply
    143,655.84x = 198,258.84 × 79,993.62
  4. Step 4: Simplify right side
    143,655.84x = 15,859,442,308.60
  5. Step 5: Solve for x
    x = 15,859,442,308.60/143,655.84
  6. Step 6: Final answer
    x = 110,398.87

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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.