Home / 140,187.12-193,450.84-76,512.56

Finding the Fourth Proportional to 140,187.12, 193,450.84 and 76,512.56

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Solution

The fourth proportional to 140,187.12, 193,450.84 and 76,512.56 is: 105,583.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,187.12 : 193,450.84 = 76,512.56 : x
  2. Step 2: Convert to fraction form
    140,187.12/193,450.84 = 76,512.56/x
  3. Step 3: Cross multiply
    140,187.12x = 193,450.84 × 76,512.56
  4. Step 4: Simplify right side
    140,187.12x = 14,801,419,002.55
  5. Step 5: Solve for x
    x = 14,801,419,002.55/140,187.12
  6. Step 6: Final answer
    x = 105,583.30

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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.