Home / 135,589.56-187,118.44-81,864.14

Finding the Fourth Proportional to 135,589.56, 187,118.44 and 81,864.14

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Solution

The fourth proportional to 135,589.56, 187,118.44 and 81,864.14 is: 112,975.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,589.56 : 187,118.44 = 81,864.14 : x
  2. Step 2: Convert to fraction form
    135,589.56/187,118.44 = 81,864.14/x
  3. Step 3: Cross multiply
    135,589.56x = 187,118.44 × 81,864.14
  4. Step 4: Simplify right side
    135,589.56x = 15,318,290,168.74
  5. Step 5: Solve for x
    x = 15,318,290,168.74/135,589.56
  6. Step 6: Final answer
    x = 112,975.44

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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.