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Finding the Fourth Proportional to 100,366.92, 138,506.35 and 55,654.92

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Solution

The fourth proportional to 100,366.92, 138,506.35 and 55,654.92 is: 76,803.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,366.92 : 138,506.35 = 55,654.92 : x
  2. Step 2: Convert to fraction form
    100,366.92/138,506.35 = 55,654.92/x
  3. Step 3: Cross multiply
    100,366.92x = 138,506.35 × 55,654.92
  4. Step 4: Simplify right side
    100,366.92x = 7,708,560,262.36
  5. Step 5: Solve for x
    x = 7,708,560,262.36/100,366.92
  6. Step 6: Final answer
    x = 76,803.79

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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.