Home / 139,351.28-192,335.45-91,609.07

Finding the Fourth Proportional to 139,351.28, 192,335.45 and 91,609.07

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Solution

The fourth proportional to 139,351.28, 192,335.45 and 91,609.07 is: 126,440.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,351.28 : 192,335.45 = 91,609.07 : x
  2. Step 2: Convert to fraction form
    139,351.28/192,335.45 = 91,609.07/x
  3. Step 3: Cross multiply
    139,351.28x = 192,335.45 × 91,609.07
  4. Step 4: Simplify right side
    139,351.28x = 17,619,670,282.81
  5. Step 5: Solve for x
    x = 17,619,670,282.81/139,351.28
  6. Step 6: Final answer
    x = 126,440.68

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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.