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Finding the Fourth Proportional to 177,976.85, 245,609.52 and 109,978.31

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Solution

The fourth proportional to 177,976.85, 245,609.52 and 109,978.31 is: 151,770.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,976.85 : 245,609.52 = 109,978.31 : x
  2. Step 2: Convert to fraction form
    177,976.85/245,609.52 = 109,978.31/x
  3. Step 3: Cross multiply
    177,976.85x = 245,609.52 × 109,978.31
  4. Step 4: Simplify right side
    177,976.85x = 27,011,718,749.56
  5. Step 5: Solve for x
    x = 27,011,718,749.56/177,976.85
  6. Step 6: Final answer
    x = 151,770.97

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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.