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Finding the Fourth Proportional to 104,072, 143,681.28 and 68,324.56

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Solution

The fourth proportional to 104,072, 143,681.28 and 68,324.56 is: 94,328.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,072 : 143,681.28 = 68,324.56 : x
  2. Step 2: Convert to fraction form
    104,072/143,681.28 = 68,324.56/x
  3. Step 3: Cross multiply
    104,072x = 143,681.28 × 68,324.56
  4. Step 4: Simplify right side
    104,072x = 9,816,960,236.24
  5. Step 5: Solve for x
    x = 9,816,960,236.24/104,072
  6. Step 6: Final answer
    x = 94,328.54

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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.