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Finding the Fourth Proportional to 180,388.20, 248,936 and 99,819.12

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Solution

The fourth proportional to 180,388.20, 248,936 and 99,819.12 is: 137,750.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,388.20 : 248,936 = 99,819.12 : x
  2. Step 2: Convert to fraction form
    180,388.20/248,936 = 99,819.12/x
  3. Step 3: Cross multiply
    180,388.20x = 248,936 × 99,819.12
  4. Step 4: Simplify right side
    180,388.20x = 24,848,572,456.32
  5. Step 5: Solve for x
    x = 24,848,572,456.32/180,388.20
  6. Step 6: Final answer
    x = 137,750.54

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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.