Home / 99,380.36-137,145.44-59,086.28

Finding the Fourth Proportional to 99,380.36, 137,145.44 and 59,086.28

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Solution

The fourth proportional to 99,380.36, 137,145.44 and 59,086.28 is: 81,539.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,380.36 : 137,145.44 = 59,086.28 : x
  2. Step 2: Convert to fraction form
    99,380.36/137,145.44 = 59,086.28/x
  3. Step 3: Cross multiply
    99,380.36x = 137,145.44 × 59,086.28
  4. Step 4: Simplify right side
    99,380.36x = 8,103,413,868.56
  5. Step 5: Solve for x
    x = 8,103,413,868.56/99,380.36
  6. Step 6: Final answer
    x = 81,539.39

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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.