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Finding the Fourth Proportional to 121,093.68, 181,657.56 and 42,196.56

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Solution

The fourth proportional to 121,093.68, 181,657.56 and 42,196.56 is: 63,300.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,093.68 : 181,657.56 = 42,196.56 : x
  2. Step 2: Convert to fraction form
    121,093.68/181,657.56 = 42,196.56/x
  3. Step 3: Cross multiply
    121,093.68x = 181,657.56 × 42,196.56
  4. Step 4: Simplify right side
    121,093.68x = 7,665,324,129.99
  5. Step 5: Solve for x
    x = 7,665,324,129.99/121,093.68
  6. Step 6: Final answer
    x = 63,300.78

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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.