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Finding the Fourth Proportional to 125,360.72, 172,995.72 and 68,777.36

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Solution

The fourth proportional to 125,360.72, 172,995.72 and 68,777.36 is: 94,911.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,360.72 : 172,995.72 = 68,777.36 : x
  2. Step 2: Convert to fraction form
    125,360.72/172,995.72 = 68,777.36/x
  3. Step 3: Cross multiply
    125,360.72x = 172,995.72 × 68,777.36
  4. Step 4: Simplify right side
    125,360.72x = 11,898,188,912.90
  5. Step 5: Solve for x
    x = 11,898,188,912.90/125,360.72
  6. Step 6: Final answer
    x = 94,911.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.