Home / 140,512.82-210,621.60-87,204.69

Finding the Fourth Proportional to 140,512.82, 210,621.60 and 87,204.69

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Solution

The fourth proportional to 140,512.82, 210,621.60 and 87,204.69 is: 130,715.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,512.82 : 210,621.60 = 87,204.69 : x
  2. Step 2: Convert to fraction form
    140,512.82/210,621.60 = 87,204.69/x
  3. Step 3: Cross multiply
    140,512.82x = 210,621.60 × 87,204.69
  4. Step 4: Simplify right side
    140,512.82x = 18,367,191,335.30
  5. Step 5: Solve for x
    x = 18,367,191,335.30/140,512.82
  6. Step 6: Final answer
    x = 130,715.42

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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.