Home / 102,179.35-140,991.87-56,856.61

Finding the Fourth Proportional to 102,179.35, 140,991.87 and 56,856.61

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Solution

The fourth proportional to 102,179.35, 140,991.87 and 56,856.61 is: 78,453.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,179.35 : 140,991.87 = 56,856.61 : x
  2. Step 2: Convert to fraction form
    102,179.35/140,991.87 = 56,856.61/x
  3. Step 3: Cross multiply
    102,179.35x = 140,991.87 × 56,856.61
  4. Step 4: Simplify right side
    102,179.35x = 8,016,319,765.76
  5. Step 5: Solve for x
    x = 8,016,319,765.76/102,179.35
  6. Step 6: Final answer
    x = 78,453.42

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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.