Home / 136,449.40-188,199.58-91,105.60

Finding the Fourth Proportional to 136,449.40, 188,199.58 and 91,105.60

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Solution

The fourth proportional to 136,449.40, 188,199.58 and 91,105.60 is: 125,658.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,449.40 : 188,199.58 = 91,105.60 : x
  2. Step 2: Convert to fraction form
    136,449.40/188,199.58 = 91,105.60/x
  3. Step 3: Cross multiply
    136,449.40x = 188,199.58 × 91,105.60
  4. Step 4: Simplify right side
    136,449.40x = 17,146,035,655.65
  5. Step 5: Solve for x
    x = 17,146,035,655.65/136,449.40
  6. Step 6: Final answer
    x = 125,658.56

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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.