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Finding the Fourth Proportional to 161,698.20, 242,561.88 and 72,993.48

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Solution

The fourth proportional to 161,698.20, 242,561.88 and 72,993.48 is: 109,496.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,698.20 : 242,561.88 = 72,993.48 : x
  2. Step 2: Convert to fraction form
    161,698.20/242,561.88 = 72,993.48/x
  3. Step 3: Cross multiply
    161,698.20x = 242,561.88 × 72,993.48
  4. Step 4: Simplify right side
    161,698.20x = 17,705,435,736.54
  5. Step 5: Solve for x
    x = 17,705,435,736.54/161,698.20
  6. Step 6: Final answer
    x = 109,496.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.