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Finding the Fourth Proportional to 98,940, 136,537.20 and 54,227.04

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Solution

The fourth proportional to 98,940, 136,537.20 and 54,227.04 is: 74,833.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,940 : 136,537.20 = 54,227.04 : x
  2. Step 2: Convert to fraction form
    98,940/136,537.20 = 54,227.04/x
  3. Step 3: Cross multiply
    98,940x = 136,537.20 × 54,227.04
  4. Step 4: Simplify right side
    98,940x = 7,404,008,205.89
  5. Step 5: Solve for x
    x = 7,404,008,205.89/98,940
  6. Step 6: Final answer
    x = 74,833.32

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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.