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Finding the Fourth Proportional to 163,348.74, 225,404.46 and 91,728.18

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Solution

The fourth proportional to 163,348.74, 225,404.46 and 91,728.18 is: 126,575.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,348.74 : 225,404.46 = 91,728.18 : x
  2. Step 2: Convert to fraction form
    163,348.74/225,404.46 = 91,728.18/x
  3. Step 3: Cross multiply
    163,348.74x = 225,404.46 × 91,728.18
  4. Step 4: Simplify right side
    163,348.74x = 20,675,940,879.68
  5. Step 5: Solve for x
    x = 20,675,940,879.68/163,348.74
  6. Step 6: Final answer
    x = 126,575.45

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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.