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Finding the Fourth Proportional to 89,469.24, 133,533.84 and 87,992.88

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Solution

The fourth proportional to 89,469.24, 133,533.84 and 87,992.88 is: 131,330.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,469.24 : 133,533.84 = 87,992.88 : x
  2. Step 2: Convert to fraction form
    89,469.24/133,533.84 = 87,992.88/x
  3. Step 3: Cross multiply
    89,469.24x = 133,533.84 × 87,992.88
  4. Step 4: Simplify right side
    89,469.24x = 11,750,027,159.06
  5. Step 5: Solve for x
    x = 11,750,027,159.06/89,469.24
  6. Step 6: Final answer
    x = 131,330.36

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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.