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Finding the Fourth Proportional to 124,997.80, 172,334.11 and 79,659.24

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Solution

The fourth proportional to 124,997.80, 172,334.11 and 79,659.24 is: 109,825.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,997.80 : 172,334.11 = 79,659.24 : x
  2. Step 2: Convert to fraction form
    124,997.80/172,334.11 = 79,659.24/x
  3. Step 3: Cross multiply
    124,997.80x = 172,334.11 × 79,659.24
  4. Step 4: Simplify right side
    124,997.80x = 13,728,004,959.25
  5. Step 5: Solve for x
    x = 13,728,004,959.25/124,997.80
  6. Step 6: Final answer
    x = 109,825.97

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1.5x scale

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.