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Finding the Fourth Proportional to 138,718.00, 191,410.31 and 84,241.84

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Solution

The fourth proportional to 138,718.00, 191,410.31 and 84,241.84 is: 116,241.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,718.00 : 191,410.31 = 84,241.84 : x
  2. Step 2: Convert to fraction form
    138,718.00/191,410.31 = 84,241.84/x
  3. Step 3: Cross multiply
    138,718.00x = 191,410.31 × 84,241.84
  4. Step 4: Simplify right side
    138,718.00x = 16,124,755,331.11
  5. Step 5: Solve for x
    x = 16,124,755,331.11/138,718.00
  6. Step 6: Final answer
    x = 116,241.27

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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.