Home / 99,998.28-138,012.12-57,556.44

Finding the Fourth Proportional to 99,998.28, 138,012.12 and 57,556.44

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Solution

The fourth proportional to 99,998.28, 138,012.12 and 57,556.44 is: 79,436.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,998.28 : 138,012.12 = 57,556.44 : x
  2. Step 2: Convert to fraction form
    99,998.28/138,012.12 = 57,556.44/x
  3. Step 3: Cross multiply
    99,998.28x = 138,012.12 × 57,556.44
  4. Step 4: Simplify right side
    99,998.28x = 7,943,486,304.05
  5. Step 5: Solve for x
    x = 7,943,486,304.05/99,998.28
  6. Step 6: Final answer
    x = 79,436.23

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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.