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Finding the Fourth Proportional to 172,729.78, 259,169.73 and 60,490.51

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Solution

The fourth proportional to 172,729.78, 259,169.73 and 60,490.51 is: 90,762.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,729.78 : 259,169.73 = 60,490.51 : x
  2. Step 2: Convert to fraction form
    172,729.78/259,169.73 = 60,490.51/x
  3. Step 3: Cross multiply
    172,729.78x = 259,169.73 × 60,490.51
  4. Step 4: Simplify right side
    172,729.78x = 15,677,309,144.26
  5. Step 5: Solve for x
    x = 15,677,309,144.26/172,729.78
  6. Step 6: Final answer
    x = 90,762.05

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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.