Home / 140,132.09-193,388.09-79,713.38

Finding the Fourth Proportional to 140,132.09, 193,388.09 and 79,713.38

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Solution

The fourth proportional to 140,132.09, 193,388.09 and 79,713.38 is: 110,007.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,132.09 : 193,388.09 = 79,713.38 : x
  2. Step 2: Convert to fraction form
    140,132.09/193,388.09 = 79,713.38/x
  3. Step 3: Cross multiply
    140,132.09x = 193,388.09 × 79,713.38
  4. Step 4: Simplify right side
    140,132.09x = 15,415,616,940.14
  5. Step 5: Solve for x
    x = 15,415,616,940.14/140,132.09
  6. Step 6: Final answer
    x = 110,007.76

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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.