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Finding the Fourth Proportional to 181,355.42, 250,270.76 and 100,780.88

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Solution

The fourth proportional to 181,355.42, 250,270.76 and 100,780.88 is: 139,077.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,355.42 : 250,270.76 = 100,780.88 : x
  2. Step 2: Convert to fraction form
    181,355.42/250,270.76 = 100,780.88/x
  3. Step 3: Cross multiply
    181,355.42x = 250,270.76 × 100,780.88
  4. Step 4: Simplify right side
    181,355.42x = 25,222,505,675.81
  5. Step 5: Solve for x
    x = 25,222,505,675.81/181,355.42
  6. Step 6: Final answer
    x = 139,077.76

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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.