Home / 99,945.99-149,919.64-39,979.48

Finding the Fourth Proportional to 99,945.99, 149,919.64 and 39,979.48

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Solution

The fourth proportional to 99,945.99, 149,919.64 and 39,979.48 is: 59,969.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,945.99 : 149,919.64 = 39,979.48 : x
  2. Step 2: Convert to fraction form
    99,945.99/149,919.64 = 39,979.48/x
  3. Step 3: Cross multiply
    99,945.99x = 149,919.64 × 39,979.48
  4. Step 4: Simplify right side
    99,945.99x = 5,993,708,861.69
  5. Step 5: Solve for x
    x = 5,993,708,861.69/99,945.99
  6. Step 6: Final answer
    x = 59,969.48

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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.