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Finding the Fourth Proportional to 74,369.38, 102,831.80 and 73,167.68

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Solution

The fourth proportional to 74,369.38, 102,831.80 and 73,167.68 is: 101,170.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,369.38 : 102,831.80 = 73,167.68 : x
  2. Step 2: Convert to fraction form
    74,369.38/102,831.80 = 73,167.68/x
  3. Step 3: Cross multiply
    74,369.38x = 102,831.80 × 73,167.68
  4. Step 4: Simplify right side
    74,369.38x = 7,523,964,236.22
  5. Step 5: Solve for x
    x = 7,523,964,236.22/74,369.38
  6. Step 6: Final answer
    x = 101,170.19

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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.