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Finding the Fourth Proportional to 99,546.80, 149,320.20 and 37,209.20

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Solution

The fourth proportional to 99,546.80, 149,320.20 and 37,209.20 is: 55,813.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,546.80 : 149,320.20 = 37,209.20 : x
  2. Step 2: Convert to fraction form
    99,546.80/149,320.20 = 37,209.20/x
  3. Step 3: Cross multiply
    99,546.80x = 149,320.20 × 37,209.20
  4. Step 4: Simplify right side
    99,546.80x = 5,556,085,185.84
  5. Step 5: Solve for x
    x = 5,556,085,185.84/99,546.80
  6. Step 6: Final answer
    x = 55,813.80

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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.