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Finding the Fourth Proportional to 99,790.68, 149,752.12 and 54,843.42

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Solution

The fourth proportional to 99,790.68, 149,752.12 and 54,843.42 is: 82,301.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,790.68 : 149,752.12 = 54,843.42 : x
  2. Step 2: Convert to fraction form
    99,790.68/149,752.12 = 54,843.42/x
  3. Step 3: Cross multiply
    99,790.68x = 149,752.12 × 54,843.42
  4. Step 4: Simplify right side
    99,790.68x = 8,212,918,413.05
  5. Step 5: Solve for x
    x = 8,212,918,413.05/99,790.68
  6. Step 6: Final answer
    x = 82,301.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.