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Finding the Fourth Proportional to 99,803.40, 149,705.10 and 40,608.60

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Solution

The fourth proportional to 99,803.40, 149,705.10 and 40,608.60 is: 60,912.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,803.40 : 149,705.10 = 40,608.60 : x
  2. Step 2: Convert to fraction form
    99,803.40/149,705.10 = 40,608.60/x
  3. Step 3: Cross multiply
    99,803.40x = 149,705.10 × 40,608.60
  4. Step 4: Simplify right side
    99,803.40x = 6,079,314,523.86
  5. Step 5: Solve for x
    x = 6,079,314,523.86/99,803.40
  6. Step 6: Final answer
    x = 60,912.90

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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.