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Finding the Fourth Proportional to 181,662.90, 272,235.15 and 133,905.30

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Solution

The fourth proportional to 181,662.90, 272,235.15 and 133,905.30 is: 200,666.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,662.90 : 272,235.15 = 133,905.30 : x
  2. Step 2: Convert to fraction form
    181,662.90/272,235.15 = 133,905.30/x
  3. Step 3: Cross multiply
    181,662.90x = 272,235.15 × 133,905.30
  4. Step 4: Simplify right side
    181,662.90x = 36,453,729,431.30
  5. Step 5: Solve for x
    x = 36,453,729,431.30/181,662.90
  6. Step 6: Final answer
    x = 200,666.89

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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.