Home / 99,759.51-137,556.50-81,553.41

Finding the Fourth Proportional to 99,759.51, 137,556.50 and 81,553.41

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Solution

The fourth proportional to 99,759.51, 137,556.50 and 81,553.41 is: 112,452.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,759.51 : 137,556.50 = 81,553.41 : x
  2. Step 2: Convert to fraction form
    99,759.51/137,556.50 = 81,553.41/x
  3. Step 3: Cross multiply
    99,759.51x = 137,556.50 × 81,553.41
  4. Step 4: Simplify right side
    99,759.51x = 11,218,201,234.90
  5. Step 5: Solve for x
    x = 11,218,201,234.90/99,759.51
  6. Step 6: Final answer
    x = 112,452.45

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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.