Home / 136,705.44-188,653.60-80,116.80

Finding the Fourth Proportional to 136,705.44, 188,653.60 and 80,116.80

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Solution

The fourth proportional to 136,705.44, 188,653.60 and 80,116.80 is: 110,561.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,705.44 : 188,653.60 = 80,116.80 : x
  2. Step 2: Convert to fraction form
    136,705.44/188,653.60 = 80,116.80/x
  3. Step 3: Cross multiply
    136,705.44x = 188,653.60 × 80,116.80
  4. Step 4: Simplify right side
    136,705.44x = 15,114,322,740.48
  5. Step 5: Solve for x
    x = 15,114,322,740.48/136,705.44
  6. Step 6: Final answer
    x = 110,561.24

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1.5x scale

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.