Home / 135,701.16-187,263.16-81,976.80

Finding the Fourth Proportional to 135,701.16, 187,263.16 and 81,976.80

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Solution

The fourth proportional to 135,701.16, 187,263.16 and 81,976.80 is: 113,125.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,701.16 : 187,263.16 = 81,976.80 : x
  2. Step 2: Convert to fraction form
    135,701.16/187,263.16 = 81,976.80/x
  3. Step 3: Cross multiply
    135,701.16x = 187,263.16 × 81,976.80
  4. Step 4: Simplify right side
    135,701.16x = 15,351,234,614.69
  5. Step 5: Solve for x
    x = 15,351,234,614.69/135,701.16
  6. Step 6: Final answer
    x = 113,125.30

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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.