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Finding the Fourth Proportional to 156,571.91, 234,893.69 and 67,840.19

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Solution

The fourth proportional to 156,571.91, 234,893.69 and 67,840.19 is: 101,775.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,571.91 : 234,893.69 = 67,840.19 : x
  2. Step 2: Convert to fraction form
    156,571.91/234,893.69 = 67,840.19/x
  3. Step 3: Cross multiply
    156,571.91x = 234,893.69 × 67,840.19
  4. Step 4: Simplify right side
    156,571.91x = 15,935,232,220.20
  5. Step 5: Solve for x
    x = 15,935,232,220.20/156,571.91
  6. Step 6: Final answer
    x = 101,775.81

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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.