Home / 181,771.38-272,416.49-139,489.88

Finding the Fourth Proportional to 181,771.38, 272,416.49 and 139,489.88

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Solution

The fourth proportional to 181,771.38, 272,416.49 and 139,489.88 is: 209,050.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,771.38 : 272,416.49 = 139,489.88 : x
  2. Step 2: Convert to fraction form
    181,771.38/272,416.49 = 139,489.88/x
  3. Step 3: Cross multiply
    181,771.38x = 272,416.49 × 139,489.88
  4. Step 4: Simplify right side
    181,771.38x = 37,999,343,500.12
  5. Step 5: Solve for x
    x = 37,999,343,500.12/181,771.38
  6. Step 6: Final answer
    x = 209,050.21

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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.