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Finding the Fourth Proportional to 136,571.39, 188,401.53 and 91,260.51

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Solution

The fourth proportional to 136,571.39, 188,401.53 and 91,260.51 is: 125,894.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,571.39 : 188,401.53 = 91,260.51 : x
  2. Step 2: Convert to fraction form
    136,571.39/188,401.53 = 91,260.51/x
  3. Step 3: Cross multiply
    136,571.39x = 188,401.53 × 91,260.51
  4. Step 4: Simplify right side
    136,571.39x = 17,193,619,712.58
  5. Step 5: Solve for x
    x = 17,193,619,712.58/136,571.39
  6. Step 6: Final answer
    x = 125,894.74

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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.