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Finding the Fourth Proportional to 181,661.40, 272,232.90 and 133,903.80

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Solution

The fourth proportional to 181,661.40, 272,232.90 and 133,903.80 is: 200,664.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,661.40 : 272,232.90 = 133,903.80 : x
  2. Step 2: Convert to fraction form
    181,661.40/272,232.90 = 133,903.80/x
  3. Step 3: Cross multiply
    181,661.40x = 272,232.90 × 133,903.80
  4. Step 4: Simplify right side
    181,661.40x = 36,453,019,795.02
  5. Step 5: Solve for x
    x = 36,453,019,795.02/181,661.40
  6. Step 6: Final answer
    x = 200,664.64

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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.