Home / 142,568.51-196,736.73-81,305.71

Finding the Fourth Proportional to 142,568.51, 196,736.73 and 81,305.71

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Solution

The fourth proportional to 142,568.51, 196,736.73 and 81,305.71 is: 112,197.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,568.51 : 196,736.73 = 81,305.71 : x
  2. Step 2: Convert to fraction form
    142,568.51/196,736.73 = 81,305.71/x
  3. Step 3: Cross multiply
    142,568.51x = 196,736.73 × 81,305.71
  4. Step 4: Simplify right side
    142,568.51x = 15,995,819,515.73
  5. Step 5: Solve for x
    x = 15,995,819,515.73/142,568.51
  6. Step 6: Final answer
    x = 112,197.42

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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.