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Finding the Fourth Proportional to 135,337.44, 186,752.79 and 91,641

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Solution

The fourth proportional to 135,337.44, 186,752.79 and 91,641 is: 126,455.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,337.44 : 186,752.79 = 91,641 : x
  2. Step 2: Convert to fraction form
    135,337.44/186,752.79 = 91,641/x
  3. Step 3: Cross multiply
    135,337.44x = 186,752.79 × 91,641
  4. Step 4: Simplify right side
    135,337.44x = 17,114,212,428.39
  5. Step 5: Solve for x
    x = 17,114,212,428.39/135,337.44
  6. Step 6: Final answer
    x = 126,455.86

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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.