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Finding the Fourth Proportional to 99,818.60, 149,603.31 and 49,912.97

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Solution

The fourth proportional to 99,818.60, 149,603.31 and 49,912.97 is: 74,807.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,818.60 : 149,603.31 = 49,912.97 : x
  2. Step 2: Convert to fraction form
    99,818.60/149,603.31 = 49,912.97/x
  3. Step 3: Cross multiply
    99,818.60x = 149,603.31 × 49,912.97
  4. Step 4: Simplify right side
    99,818.60x = 7,467,145,523.93
  5. Step 5: Solve for x
    x = 7,467,145,523.93/99,818.60
  6. Step 6: Final answer
    x = 74,807.16

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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.