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Finding the Fourth Proportional to 100,246.32, 138,342.83 and 54,928.26

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Solution

The fourth proportional to 100,246.32, 138,342.83 and 54,928.26 is: 75,802.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,246.32 : 138,342.83 = 54,928.26 : x
  2. Step 2: Convert to fraction form
    100,246.32/138,342.83 = 54,928.26/x
  3. Step 3: Cross multiply
    100,246.32x = 138,342.83 × 54,928.26
  4. Step 4: Simplify right side
    100,246.32x = 7,598,930,660.73
  5. Step 5: Solve for x
    x = 7,598,930,660.73/100,246.32
  6. Step 6: Final answer
    x = 75,802.59

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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.