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Finding the Fourth Proportional to 235,879.22, 353,753.15 and 78,119.97

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Solution

The fourth proportional to 235,879.22, 353,753.15 and 78,119.97 is: 117,158.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,879.22 : 353,753.15 = 78,119.97 : x
  2. Step 2: Convert to fraction form
    235,879.22/353,753.15 = 78,119.97/x
  3. Step 3: Cross multiply
    235,879.22x = 353,753.15 × 78,119.97
  4. Step 4: Simplify right side
    235,879.22x = 27,635,185,074.81
  5. Step 5: Solve for x
    x = 27,635,185,074.81/235,879.22
  6. Step 6: Final answer
    x = 117,158.20

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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.