Home / 89,144.31-133,415.07-86,745.46

Finding the Fourth Proportional to 89,144.31, 133,415.07 and 86,745.46

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Solution

The fourth proportional to 89,144.31, 133,415.07 and 86,745.46 is: 129,824.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,144.31 : 133,415.07 = 86,745.46 : x
  2. Step 2: Convert to fraction form
    89,144.31/133,415.07 = 86,745.46/x
  3. Step 3: Cross multiply
    89,144.31x = 133,415.07 × 86,745.46
  4. Step 4: Simplify right side
    89,144.31x = 11,573,151,618.08
  5. Step 5: Solve for x
    x = 11,573,151,618.08/89,144.31
  6. Step 6: Final answer
    x = 129,824.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.