Home / 136,619.97-188,535.18-76,190.67

Finding the Fourth Proportional to 136,619.97, 188,535.18 and 76,190.67

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Solution

The fourth proportional to 136,619.97, 188,535.18 and 76,190.67 is: 105,142.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,619.97 : 188,535.18 = 76,190.67 : x
  2. Step 2: Convert to fraction form
    136,619.97/188,535.18 = 76,190.67/x
  3. Step 3: Cross multiply
    136,619.97x = 188,535.18 × 76,190.67
  4. Step 4: Simplify right side
    136,619.97x = 14,364,621,682.77
  5. Step 5: Solve for x
    x = 14,364,621,682.77/136,619.97
  6. Step 6: Final answer
    x = 105,142.91

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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.