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Finding the Fourth Proportional to 149,515.80, 205,911.90 and 146,249.88

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Solution

The fourth proportional to 149,515.80, 205,911.90 and 146,249.88 is: 201,414.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,515.80 : 205,911.90 = 146,249.88 : x
  2. Step 2: Convert to fraction form
    149,515.80/205,911.90 = 146,249.88/x
  3. Step 3: Cross multiply
    149,515.80x = 205,911.90 × 146,249.88
  4. Step 4: Simplify right side
    149,515.80x = 30,114,590,665.57
  5. Step 5: Solve for x
    x = 30,114,590,665.57/149,515.80
  6. Step 6: Final answer
    x = 201,414.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.