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Finding the Fourth Proportional to 136,388.84, 188,274.84 and 91,702.76

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Solution

The fourth proportional to 136,388.84, 188,274.84 and 91,702.76 is: 126,588.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,388.84 : 188,274.84 = 91,702.76 : x
  2. Step 2: Convert to fraction form
    136,388.84/188,274.84 = 91,702.76/x
  3. Step 3: Cross multiply
    136,388.84x = 188,274.84 × 91,702.76
  4. Step 4: Simplify right side
    136,388.84x = 17,265,322,466.56
  5. Step 5: Solve for x
    x = 17,265,322,466.56/136,388.84
  6. Step 6: Final answer
    x = 126,588.97

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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.