Home / 135,586.56-187,114.30-81,861.14

Finding the Fourth Proportional to 135,586.56, 187,114.30 and 81,861.14

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Solution

The fourth proportional to 135,586.56, 187,114.30 and 81,861.14 is: 112,971.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,586.56 : 187,114.30 = 81,861.14 : x
  2. Step 2: Convert to fraction form
    135,586.56/187,114.30 = 81,861.14/x
  3. Step 3: Cross multiply
    135,586.56x = 187,114.30 × 81,861.14
  4. Step 4: Simplify right side
    135,586.56x = 15,317,389,908.30
  5. Step 5: Solve for x
    x = 15,317,389,908.30/135,586.56
  6. Step 6: Final answer
    x = 112,971.30

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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.