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Finding the Fourth Proportional to 108,873.39, 150,241.43 and 61,128.75

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Solution

The fourth proportional to 108,873.39, 150,241.43 and 61,128.75 is: 84,355.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,873.39 : 150,241.43 = 61,128.75 : x
  2. Step 2: Convert to fraction form
    108,873.39/150,241.43 = 61,128.75/x
  3. Step 3: Cross multiply
    108,873.39x = 150,241.43 × 61,128.75
  4. Step 4: Simplify right side
    108,873.39x = 9,184,070,508.47
  5. Step 5: Solve for x
    x = 9,184,070,508.47/108,873.39
  6. Step 6: Final answer
    x = 84,355.51

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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.