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Finding the Fourth Proportional to 117,235.68, 161,781.47 and 66,934.68

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Solution

The fourth proportional to 117,235.68, 161,781.47 and 66,934.68 is: 92,367.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,235.68 : 161,781.47 = 66,934.68 : x
  2. Step 2: Convert to fraction form
    117,235.68/161,781.47 = 66,934.68/x
  3. Step 3: Cross multiply
    117,235.68x = 161,781.47 × 66,934.68
  4. Step 4: Simplify right side
    117,235.68x = 10,828,790,924.38
  5. Step 5: Solve for x
    x = 10,828,790,924.38/117,235.68
  6. Step 6: Final answer
    x = 92,367.71

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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.