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Finding the Fourth Proportional to 172,298.16, 258,183.48 and 115,929.48

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Solution

The fourth proportional to 172,298.16, 258,183.48 and 115,929.48 is: 173,716.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,298.16 : 258,183.48 = 115,929.48 : x
  2. Step 2: Convert to fraction form
    172,298.16/258,183.48 = 115,929.48/x
  3. Step 3: Cross multiply
    172,298.16x = 258,183.48 × 115,929.48
  4. Step 4: Simplify right side
    172,298.16x = 29,931,076,580.99
  5. Step 5: Solve for x
    x = 29,931,076,580.99/172,298.16
  6. Step 6: Final answer
    x = 173,716.75

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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.