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Finding the Fourth Proportional to 100,241.72, 138,333.68 and 54,301.47

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Solution

The fourth proportional to 100,241.72, 138,333.68 and 54,301.47 is: 74,936.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,241.72 : 138,333.68 = 54,301.47 : x
  2. Step 2: Convert to fraction form
    100,241.72/138,333.68 = 54,301.47/x
  3. Step 3: Cross multiply
    100,241.72x = 138,333.68 × 54,301.47
  4. Step 4: Simplify right side
    100,241.72x = 7,511,722,174.51
  5. Step 5: Solve for x
    x = 7,511,722,174.51/100,241.72
  6. Step 6: Final answer
    x = 74,936.09

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1.5x scale

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.