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Finding the Fourth Proportional to 172,969.20, 259,502.40 and 73,177.20

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Solution

The fourth proportional to 172,969.20, 259,502.40 and 73,177.20 is: 109,786.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,969.20 : 259,502.40 = 73,177.20 : x
  2. Step 2: Convert to fraction form
    172,969.20/259,502.40 = 73,177.20/x
  3. Step 3: Cross multiply
    172,969.20x = 259,502.40 × 73,177.20
  4. Step 4: Simplify right side
    172,969.20x = 18,989,659,025.28
  5. Step 5: Solve for x
    x = 18,989,659,025.28/172,969.20
  6. Step 6: Final answer
    x = 109,786.36

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1.5x scale

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.