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Finding the Fourth Proportional to 181,989.80, 272,984.70 and 165,660.20

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Solution

The fourth proportional to 181,989.80, 272,984.70 and 165,660.20 is: 248,490.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,989.80 : 272,984.70 = 165,660.20 : x
  2. Step 2: Convert to fraction form
    181,989.80/272,984.70 = 165,660.20/x
  3. Step 3: Cross multiply
    181,989.80x = 272,984.70 × 165,660.20
  4. Step 4: Simplify right side
    181,989.80x = 45,222,699,998.94
  5. Step 5: Solve for x
    x = 45,222,699,998.94/181,989.80
  6. Step 6: Final answer
    x = 248,490.30

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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.