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Finding the Fourth Proportional to 117,394.93, 161,825.24 and 71,988.71

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Solution

The fourth proportional to 117,394.93, 161,825.24 and 71,988.71 is: 99,234.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,394.93 : 161,825.24 = 71,988.71 : x
  2. Step 2: Convert to fraction form
    117,394.93/161,825.24 = 71,988.71/x
  3. Step 3: Cross multiply
    117,394.93x = 161,825.24 × 71,988.71
  4. Step 4: Simplify right side
    117,394.93x = 11,649,590,857.58
  5. Step 5: Solve for x
    x = 11,649,590,857.58/117,394.93
  6. Step 6: Final answer
    x = 99,234.19

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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.