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Finding the Fourth Proportional to 172,313.87, 258,292.73 and 65,669.20

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Solution

The fourth proportional to 172,313.87, 258,292.73 and 65,669.20 is: 98,435.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,313.87 : 258,292.73 = 65,669.20 : x
  2. Step 2: Convert to fraction form
    172,313.87/258,292.73 = 65,669.20/x
  3. Step 3: Cross multiply
    172,313.87x = 258,292.73 × 65,669.20
  4. Step 4: Simplify right side
    172,313.87x = 16,961,876,944.92
  5. Step 5: Solve for x
    x = 16,961,876,944.92/172,313.87
  6. Step 6: Final answer
    x = 98,435.94

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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.