Home / 135,588.56-187,117.06-81,863.14

Finding the Fourth Proportional to 135,588.56, 187,117.06 and 81,863.14

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Solution

The fourth proportional to 135,588.56, 187,117.06 and 81,863.14 is: 112,974.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,588.56 : 187,117.06 = 81,863.14 : x
  2. Step 2: Convert to fraction form
    135,588.56/187,117.06 = 81,863.14/x
  3. Step 3: Cross multiply
    135,588.56x = 187,117.06 × 81,863.14
  4. Step 4: Simplify right side
    135,588.56x = 15,317,990,079.17
  5. Step 5: Solve for x
    x = 15,317,990,079.17/135,588.56
  6. Step 6: Final answer
    x = 112,974.06

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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.