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Finding the Fourth Proportional to 113,019, 155,971.08 and 62,718

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Solution

The fourth proportional to 113,019, 155,971.08 and 62,718 is: 86,553.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,019 : 155,971.08 = 62,718 : x
  2. Step 2: Convert to fraction form
    113,019/155,971.08 = 62,718/x
  3. Step 3: Cross multiply
    113,019x = 155,971.08 × 62,718
  4. Step 4: Simplify right side
    113,019x = 9,782,194,195.44
  5. Step 5: Solve for x
    x = 9,782,194,195.44/113,019
  6. Step 6: Final answer
    x = 86,553.54

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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.