Home / 149,836.32-206,783.69-86,172.75

Finding the Fourth Proportional to 149,836.32, 206,783.69 and 86,172.75

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Solution

The fourth proportional to 149,836.32, 206,783.69 and 86,172.75 is: 118,923.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,836.32 : 206,783.69 = 86,172.75 : x
  2. Step 2: Convert to fraction form
    149,836.32/206,783.69 = 86,172.75/x
  3. Step 3: Cross multiply
    149,836.32x = 206,783.69 × 86,172.75
  4. Step 4: Simplify right side
    149,836.32x = 17,819,118,791.58
  5. Step 5: Solve for x
    x = 17,819,118,791.58/149,836.32
  6. Step 6: Final answer
    x = 118,923.90

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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.