Home / 84,186.30-126,454.41-66,777.78

Finding the Fourth Proportional to 84,186.30, 126,454.41 and 66,777.78

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Solution

The fourth proportional to 84,186.30, 126,454.41 and 66,777.78 is: 100,305.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,186.30 : 126,454.41 = 66,777.78 : x
  2. Step 2: Convert to fraction form
    84,186.30/126,454.41 = 66,777.78/x
  3. Step 3: Cross multiply
    84,186.30x = 126,454.41 × 66,777.78
  4. Step 4: Simplify right side
    84,186.30x = 8,444,344,771.01
  5. Step 5: Solve for x
    x = 8,444,344,771.01/84,186.30
  6. Step 6: Final answer
    x = 100,305.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.