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Finding the Fourth Proportional to 172,831.40, 259,247.10 and 161,167.40

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Solution

The fourth proportional to 172,831.40, 259,247.10 and 161,167.40 is: 241,751.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,831.40 : 259,247.10 = 161,167.40 : x
  2. Step 2: Convert to fraction form
    172,831.40/259,247.10 = 161,167.40/x
  3. Step 3: Cross multiply
    172,831.40x = 259,247.10 × 161,167.40
  4. Step 4: Simplify right side
    172,831.40x = 41,782,181,064.54
  5. Step 5: Solve for x
    x = 41,782,181,064.54/172,831.40
  6. Step 6: Final answer
    x = 241,751.10

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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.