Home / 136,220.64-187,984.68-76,604.64

Finding the Fourth Proportional to 136,220.64, 187,984.68 and 76,604.64

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Solution

The fourth proportional to 136,220.64, 187,984.68 and 76,604.64 is: 105,714.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,220.64 : 187,984.68 = 76,604.64 : x
  2. Step 2: Convert to fraction form
    136,220.64/187,984.68 = 76,604.64/x
  3. Step 3: Cross multiply
    136,220.64x = 187,984.68 × 76,604.64
  4. Step 4: Simplify right side
    136,220.64x = 14,400,498,736.92
  5. Step 5: Solve for x
    x = 14,400,498,736.92/136,220.64
  6. Step 6: Final answer
    x = 105,714.51

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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.