Home / 136,730.56-188,687.82-76,297.60

Finding the Fourth Proportional to 136,730.56, 188,687.82 and 76,297.60

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Solution

The fourth proportional to 136,730.56, 188,687.82 and 76,297.60 is: 105,290.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,730.56 : 188,687.82 = 76,297.60 : x
  2. Step 2: Convert to fraction form
    136,730.56/188,687.82 = 76,297.60/x
  3. Step 3: Cross multiply
    136,730.56x = 188,687.82 × 76,297.60
  4. Step 4: Simplify right side
    136,730.56x = 14,396,427,815.23
  5. Step 5: Solve for x
    x = 14,396,427,815.23/136,730.56
  6. Step 6: Final answer
    x = 105,290.49

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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.