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Finding the Fourth Proportional to 143,593.95, 198,162.72 and 79,935.85

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Solution

The fourth proportional to 143,593.95, 198,162.72 and 79,935.85 is: 110,313.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,593.95 : 198,162.72 = 79,935.85 : x
  2. Step 2: Convert to fraction form
    143,593.95/198,162.72 = 79,935.85/x
  3. Step 3: Cross multiply
    143,593.95x = 198,162.72 × 79,935.85
  4. Step 4: Simplify right side
    143,593.95x = 15,840,305,461.51
  5. Step 5: Solve for x
    x = 15,840,305,461.51/143,593.95
  6. Step 6: Final answer
    x = 110,313.18

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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.