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Finding the Fourth Proportional to 143,167.80, 197,563.14 and 79,501.80

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Solution

The fourth proportional to 143,167.80, 197,563.14 and 79,501.80 is: 109,707.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,167.80 : 197,563.14 = 79,501.80 : x
  2. Step 2: Convert to fraction form
    143,167.80/197,563.14 = 79,501.80/x
  3. Step 3: Cross multiply
    143,167.80x = 197,563.14 × 79,501.80
  4. Step 4: Simplify right side
    143,167.80x = 15,706,625,243.65
  5. Step 5: Solve for x
    x = 15,706,625,243.65/143,167.80
  6. Step 6: Final answer
    x = 109,707.81

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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.