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Finding the Fourth Proportional to 181,770.88, 272,415.74 and 139,489.38

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Solution

The fourth proportional to 181,770.88, 272,415.74 and 139,489.38 is: 209,049.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,770.88 : 272,415.74 = 139,489.38 : x
  2. Step 2: Convert to fraction form
    181,770.88/272,415.74 = 139,489.38/x
  3. Step 3: Cross multiply
    181,770.88x = 272,415.74 × 139,489.38
  4. Step 4: Simplify right side
    181,770.88x = 37,999,102,674.84
  5. Step 5: Solve for x
    x = 37,999,102,674.84/181,770.88
  6. Step 6: Final answer
    x = 209,049.46

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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.