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Finding the Fourth Proportional to 181,722.78, 272,541.78 and 69,361.74

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Solution

The fourth proportional to 181,722.78, 272,541.78 and 69,361.74 is: 104,026.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,722.78 : 272,541.78 = 69,361.74 : x
  2. Step 2: Convert to fraction form
    181,722.78/272,541.78 = 69,361.74/x
  3. Step 3: Cross multiply
    181,722.78x = 272,541.78 × 69,361.74
  4. Step 4: Simplify right side
    181,722.78x = 18,903,972,083.50
  5. Step 5: Solve for x
    x = 18,903,972,083.50/181,722.78
  6. Step 6: Final answer
    x = 104,026.43

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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.