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Finding the Fourth Proportional to 172,745.36, 259,256.28 and 89,663.12

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Solution

The fourth proportional to 172,745.36, 259,256.28 and 89,663.12 is: 134,566.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,745.36 : 259,256.28 = 89,663.12 : x
  2. Step 2: Convert to fraction form
    172,745.36/259,256.28 = 89,663.12/x
  3. Step 3: Cross multiply
    172,745.36x = 259,256.28 × 89,663.12
  4. Step 4: Simplify right side
    172,745.36x = 23,245,726,944.39
  5. Step 5: Solve for x
    x = 23,245,726,944.39/172,745.36
  6. Step 6: Final answer
    x = 134,566.43

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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.