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Finding the Fourth Proportional to 163,400.73, 225,493.13 and 91,780.80

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Solution

The fourth proportional to 163,400.73, 225,493.13 and 91,780.80 is: 126,657.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,400.73 : 225,493.13 = 91,780.80 : x
  2. Step 2: Convert to fraction form
    163,400.73/225,493.13 = 91,780.80/x
  3. Step 3: Cross multiply
    163,400.73x = 225,493.13 × 91,780.80
  4. Step 4: Simplify right side
    163,400.73x = 20,695,939,865.90
  5. Step 5: Solve for x
    x = 20,695,939,865.90/163,400.73
  6. Step 6: Final answer
    x = 126,657.57

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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.