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Finding the Fourth Proportional to 136,441.80, 188,293.42 and 85,449.76

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Solution

The fourth proportional to 136,441.80, 188,293.42 and 85,449.76 is: 117,923.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,441.80 : 188,293.42 = 85,449.76 : x
  2. Step 2: Convert to fraction form
    136,441.80/188,293.42 = 85,449.76/x
  3. Step 3: Cross multiply
    136,441.80x = 188,293.42 × 85,449.76
  4. Step 4: Simplify right side
    136,441.80x = 16,089,627,548.58
  5. Step 5: Solve for x
    x = 16,089,627,548.58/136,441.80
  6. Step 6: Final answer
    x = 117,923.01

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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.