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Finding the Fourth Proportional to 99,683.56, 149,783.82 and 74,956.60

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Solution

The fourth proportional to 99,683.56, 149,783.82 and 74,956.60 is: 112,629.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,683.56 : 149,783.82 = 74,956.60 : x
  2. Step 2: Convert to fraction form
    99,683.56/149,783.82 = 74,956.60/x
  3. Step 3: Cross multiply
    99,683.56x = 149,783.82 × 74,956.60
  4. Step 4: Simplify right side
    99,683.56x = 11,227,285,882.21
  5. Step 5: Solve for x
    x = 11,227,285,882.21/99,683.56
  6. Step 6: Final answer
    x = 112,629.26

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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.