Home / 135,731.46-187,244.46-81,246.45

Finding the Fourth Proportional to 135,731.46, 187,244.46 and 81,246.45

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Solution

The fourth proportional to 135,731.46, 187,244.46 and 81,246.45 is: 112,081.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,731.46 : 187,244.46 = 81,246.45 : x
  2. Step 2: Convert to fraction form
    135,731.46/187,244.46 = 81,246.45/x
  3. Step 3: Cross multiply
    135,731.46x = 187,244.46 × 81,246.45
  4. Step 4: Simplify right side
    135,731.46x = 15,212,947,657.17
  5. Step 5: Solve for x
    x = 15,212,947,657.17/135,731.46
  6. Step 6: Final answer
    x = 112,081.22

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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.