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Finding the Fourth Proportional to 99,289.80, 149,007.60 and 65,998.80

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Solution

The fourth proportional to 99,289.80, 149,007.60 and 65,998.80 is: 99,046.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,289.80 : 149,007.60 = 65,998.80 : x
  2. Step 2: Convert to fraction form
    99,289.80/149,007.60 = 65,998.80/x
  3. Step 3: Cross multiply
    99,289.80x = 149,007.60 × 65,998.80
  4. Step 4: Simplify right side
    99,289.80x = 9,834,322,790.88
  5. Step 5: Solve for x
    x = 9,834,322,790.88/99,289.80
  6. Step 6: Final answer
    x = 99,046.66

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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.