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Finding the Fourth Proportional to 99,993.29, 149,940.72 and 40,813.07

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Solution

The fourth proportional to 99,993.29, 149,940.72 and 40,813.07 is: 61,199.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,993.29 : 149,940.72 = 40,813.07 : x
  2. Step 2: Convert to fraction form
    99,993.29/149,940.72 = 40,813.07/x
  3. Step 3: Cross multiply
    99,993.29x = 149,940.72 × 40,813.07
  4. Step 4: Simplify right side
    99,993.29x = 6,119,540,351.51
  5. Step 5: Solve for x
    x = 6,119,540,351.51/99,993.29
  6. Step 6: Final answer
    x = 61,199.51

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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.