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Finding the Fourth Proportional to 121,410.53, 182,004.85 and 42,481.70

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Solution

The fourth proportional to 121,410.53, 182,004.85 and 42,481.70 is: 63,683.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,410.53 : 182,004.85 = 42,481.70 : x
  2. Step 2: Convert to fraction form
    121,410.53/182,004.85 = 42,481.70/x
  3. Step 3: Cross multiply
    121,410.53x = 182,004.85 × 42,481.70
  4. Step 4: Simplify right side
    121,410.53x = 7,731,874,313.81
  5. Step 5: Solve for x
    x = 7,731,874,313.81/121,410.53
  6. Step 6: Final answer
    x = 63,683.72

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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.