Home / 145,638.76-218,481.18-52,142.44

Finding the Fourth Proportional to 145,638.76, 218,481.18 and 52,142.44

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Solution

The fourth proportional to 145,638.76, 218,481.18 and 52,142.44 is: 78,221.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,638.76 : 218,481.18 = 52,142.44 : x
  2. Step 2: Convert to fraction form
    145,638.76/218,481.18 = 52,142.44/x
  3. Step 3: Cross multiply
    145,638.76x = 218,481.18 × 52,142.44
  4. Step 4: Simplify right side
    145,638.76x = 11,392,141,819.28
  5. Step 5: Solve for x
    x = 11,392,141,819.28/145,638.76
  6. Step 6: Final answer
    x = 78,221.91

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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.