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Finding the Fourth Proportional to 99,499.60, 149,119.80 and 40,286.80

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Solution

The fourth proportional to 99,499.60, 149,119.80 and 40,286.80 is: 60,377.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,499.60 : 149,119.80 = 40,286.80 : x
  2. Step 2: Convert to fraction form
    99,499.60/149,119.80 = 40,286.80/x
  3. Step 3: Cross multiply
    99,499.60x = 149,119.80 × 40,286.80
  4. Step 4: Simplify right side
    99,499.60x = 6,007,559,558.64
  5. Step 5: Solve for x
    x = 6,007,559,558.64/99,499.60
  6. Step 6: Final answer
    x = 60,377.73

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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.