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Finding the Fourth Proportional to 143,168.80, 197,564.52 and 79,502.80

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Solution

The fourth proportional to 143,168.80, 197,564.52 and 79,502.80 is: 109,709.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,168.80 : 197,564.52 = 79,502.80 : x
  2. Step 2: Convert to fraction form
    143,168.80/197,564.52 = 79,502.80/x
  3. Step 3: Cross multiply
    143,168.80x = 197,564.52 × 79,502.80
  4. Step 4: Simplify right side
    143,168.80x = 15,706,932,520.66
  5. Step 5: Solve for x
    x = 15,706,932,520.66/143,168.80
  6. Step 6: Final answer
    x = 109,709.19

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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.