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Finding the Fourth Proportional to 172,986.80, 259,480.20 and 113,889.20

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Solution

The fourth proportional to 172,986.80, 259,480.20 and 113,889.20 is: 170,833.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,986.80 : 259,480.20 = 113,889.20 : x
  2. Step 2: Convert to fraction form
    172,986.80/259,480.20 = 113,889.20/x
  3. Step 3: Cross multiply
    172,986.80x = 259,480.20 × 113,889.20
  4. Step 4: Simplify right side
    172,986.80x = 29,551,992,393.84
  5. Step 5: Solve for x
    x = 29,551,992,393.84/172,986.80
  6. Step 6: Final answer
    x = 170,833.80

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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.