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Finding the Fourth Proportional to 99,893.44, 149,790.12 and 55,550.80

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Solution

The fourth proportional to 99,893.44, 149,790.12 and 55,550.80 is: 83,298.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,893.44 : 149,790.12 = 55,550.80 : x
  2. Step 2: Convert to fraction form
    99,893.44/149,790.12 = 55,550.80/x
  3. Step 3: Cross multiply
    99,893.44x = 149,790.12 × 55,550.80
  4. Step 4: Simplify right side
    99,893.44x = 8,320,960,998.10
  5. Step 5: Solve for x
    x = 8,320,960,998.10/99,893.44
  6. Step 6: Final answer
    x = 83,298.37

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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.