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Finding the Fourth Proportional to 136,874.59, 188,782.85 and 117,786.53

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Solution

The fourth proportional to 136,874.59, 188,782.85 and 117,786.53 is: 162,455.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,874.59 : 188,782.85 = 117,786.53 : x
  2. Step 2: Convert to fraction form
    136,874.59/188,782.85 = 117,786.53/x
  3. Step 3: Cross multiply
    136,874.59x = 188,782.85 × 117,786.53
  4. Step 4: Simplify right side
    136,874.59x = 22,236,076,236.08
  5. Step 5: Solve for x
    x = 22,236,076,236.08/136,874.59
  6. Step 6: Final answer
    x = 162,455.84

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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.