Home / 89,680.82-133,889.54-68,509.22

Finding the Fourth Proportional to 89,680.82, 133,889.54 and 68,509.22

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Solution

The fourth proportional to 89,680.82, 133,889.54 and 68,509.22 is: 102,281.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,680.82 : 133,889.54 = 68,509.22 : x
  2. Step 2: Convert to fraction form
    89,680.82/133,889.54 = 68,509.22/x
  3. Step 3: Cross multiply
    89,680.82x = 133,889.54 × 68,509.22
  4. Step 4: Simplify right side
    89,680.82x = 9,172,667,951.56
  5. Step 5: Solve for x
    x = 9,172,667,951.56/89,680.82
  6. Step 6: Final answer
    x = 102,281.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.