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Finding the Fourth Proportional to 171,428.94, 236,551.72 and 98,831.02

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Solution

The fourth proportional to 171,428.94, 236,551.72 and 98,831.02 is: 136,375.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,428.94 : 236,551.72 = 98,831.02 : x
  2. Step 2: Convert to fraction form
    171,428.94/236,551.72 = 98,831.02/x
  3. Step 3: Cross multiply
    171,428.94x = 236,551.72 × 98,831.02
  4. Step 4: Simplify right side
    171,428.94x = 23,378,647,770.35
  5. Step 5: Solve for x
    x = 23,378,647,770.35/171,428.94
  6. Step 6: Final answer
    x = 136,375.15

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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.