Home / 128,190.96-176,986.80-114,738.96

Finding the Fourth Proportional to 128,190.96, 176,986.80 and 114,738.96

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Solution

The fourth proportional to 128,190.96, 176,986.80 and 114,738.96 is: 158,414.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,190.96 : 176,986.80 = 114,738.96 : x
  2. Step 2: Convert to fraction form
    128,190.96/176,986.80 = 114,738.96/x
  3. Step 3: Cross multiply
    128,190.96x = 176,986.80 × 114,738.96
  4. Step 4: Simplify right side
    128,190.96x = 20,307,281,365.73
  5. Step 5: Solve for x
    x = 20,307,281,365.73/128,190.96
  6. Step 6: Final answer
    x = 158,414.30

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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.