Home / 138,515.83-191,474.63-123,556.75

Finding the Fourth Proportional to 138,515.83, 191,474.63 and 123,556.75

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Solution

The fourth proportional to 138,515.83, 191,474.63 and 123,556.75 is: 170,796.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,515.83 : 191,474.63 = 123,556.75 : x
  2. Step 2: Convert to fraction form
    138,515.83/191,474.63 = 123,556.75/x
  3. Step 3: Cross multiply
    138,515.83x = 191,474.63 × 123,556.75
  4. Step 4: Simplify right side
    138,515.83x = 23,657,982,990.25
  5. Step 5: Solve for x
    x = 23,657,982,990.25/138,515.83
  6. Step 6: Final answer
    x = 170,796.24

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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.