Home / 138,496.28-191,171.88-86,149.22

Finding the Fourth Proportional to 138,496.28, 191,171.88 and 86,149.22

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Solution

The fourth proportional to 138,496.28, 191,171.88 and 86,149.22 is: 118,915.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,496.28 : 191,171.88 = 86,149.22 : x
  2. Step 2: Convert to fraction form
    138,496.28/191,171.88 = 86,149.22/x
  3. Step 3: Cross multiply
    138,496.28x = 191,171.88 × 86,149.22
  4. Step 4: Simplify right side
    138,496.28x = 16,469,307,392.07
  5. Step 5: Solve for x
    x = 16,469,307,392.07/138,496.28
  6. Step 6: Final answer
    x = 118,915.16

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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.