Home / 143,320-197,784.96-79,660.48

Finding the Fourth Proportional to 143,320, 197,784.96 and 79,660.48

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Solution

The fourth proportional to 143,320, 197,784.96 and 79,660.48 is: 109,933.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,320 : 197,784.96 = 79,660.48 : x
  2. Step 2: Convert to fraction form
    143,320/197,784.96 = 79,660.48/x
  3. Step 3: Cross multiply
    143,320x = 197,784.96 × 79,660.48
  4. Step 4: Simplify right side
    143,320x = 15,755,644,850.38
  5. Step 5: Solve for x
    x = 15,755,644,850.38/143,320
  6. Step 6: Final answer
    x = 109,933.33

Related Problems

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Double scale
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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.