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Finding the Fourth Proportional to 172,341.81, 237,831.71 and 100,781.96

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Solution

The fourth proportional to 172,341.81, 237,831.71 and 100,781.96 is: 139,079.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,341.81 : 237,831.71 = 100,781.96 : x
  2. Step 2: Convert to fraction form
    172,341.81/237,831.71 = 100,781.96/x
  3. Step 3: Cross multiply
    172,341.81x = 237,831.71 × 100,781.96
  4. Step 4: Simplify right side
    172,341.81x = 23,969,145,883.95
  5. Step 5: Solve for x
    x = 23,969,145,883.95/172,341.81
  6. Step 6: Final answer
    x = 139,079.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.