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Finding the Fourth Proportional to 131,863.68, 181,969.38 and 75,273.84

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Solution

The fourth proportional to 131,863.68, 181,969.38 and 75,273.84 is: 103,876.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,863.68 : 181,969.38 = 75,273.84 : x
  2. Step 2: Convert to fraction form
    131,863.68/181,969.38 = 75,273.84/x
  3. Step 3: Cross multiply
    131,863.68x = 181,969.38 × 75,273.84
  4. Step 4: Simplify right side
    131,863.68x = 13,697,533,995.02
  5. Step 5: Solve for x
    x = 13,697,533,995.02/131,863.68
  6. Step 6: Final answer
    x = 103,876.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.