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Finding the Fourth Proportional to 136,009.70, 204,081.60 and 61,182.80

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Solution

The fourth proportional to 136,009.70, 204,081.60 and 61,182.80 is: 91,804.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,009.70 : 204,081.60 = 61,182.80 : x
  2. Step 2: Convert to fraction form
    136,009.70/204,081.60 = 61,182.80/x
  3. Step 3: Cross multiply
    136,009.70x = 204,081.60 × 61,182.80
  4. Step 4: Simplify right side
    136,009.70x = 12,486,283,716.48
  5. Step 5: Solve for x
    x = 12,486,283,716.48/136,009.70
  6. Step 6: Final answer
    x = 91,804.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.