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Finding the Fourth Proportional to 143,349.97, 197,776.65 and 79,675.48

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Solution

The fourth proportional to 143,349.97, 197,776.65 and 79,675.48 is: 109,926.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,349.97 : 197,776.65 = 79,675.48 : x
  2. Step 2: Convert to fraction form
    143,349.97/197,776.65 = 79,675.48/x
  3. Step 3: Cross multiply
    143,349.97x = 197,776.65 × 79,675.48
  4. Step 4: Simplify right side
    143,349.97x = 15,757,949,521.54
  5. Step 5: Solve for x
    x = 15,757,949,521.54/143,349.97
  6. Step 6: Final answer
    x = 109,926.42

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1.5x scale

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.