Home / 138,584.01-191,295.09-81,995.25

Finding the Fourth Proportional to 138,584.01, 191,295.09 and 81,995.25

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Solution

The fourth proportional to 138,584.01, 191,295.09 and 81,995.25 is: 113,182.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,584.01 : 191,295.09 = 81,995.25 : x
  2. Step 2: Convert to fraction form
    138,584.01/191,295.09 = 81,995.25/x
  3. Step 3: Cross multiply
    138,584.01x = 191,295.09 × 81,995.25
  4. Step 4: Simplify right side
    138,584.01x = 15,685,288,728.32
  5. Step 5: Solve for x
    x = 15,685,288,728.32/138,584.01
  6. Step 6: Final answer
    x = 113,182.53

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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.