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Finding the Fourth Proportional to 181,396.80, 250,316.87 and 100,821.56

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Solution

The fourth proportional to 181,396.80, 250,316.87 and 100,821.56 is: 139,127.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,396.80 : 250,316.87 = 100,821.56 : x
  2. Step 2: Convert to fraction form
    181,396.80/250,316.87 = 100,821.56/x
  3. Step 3: Cross multiply
    181,396.80x = 250,316.87 × 100,821.56
  4. Step 4: Simplify right side
    181,396.80x = 25,237,335,572.03
  5. Step 5: Solve for x
    x = 25,237,335,572.03/181,396.80
  6. Step 6: Final answer
    x = 139,127.79

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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.