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Finding the Fourth Proportional to 158,806.50, 219,172.44 and 91,738.50

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Solution

The fourth proportional to 158,806.50, 219,172.44 and 91,738.50 is: 126,610.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,806.50 : 219,172.44 = 91,738.50 : x
  2. Step 2: Convert to fraction form
    158,806.50/219,172.44 = 91,738.50/x
  3. Step 3: Cross multiply
    158,806.50x = 219,172.44 × 91,738.50
  4. Step 4: Simplify right side
    158,806.50x = 20,106,550,886.94
  5. Step 5: Solve for x
    x = 20,106,550,886.94/158,806.50
  6. Step 6: Final answer
    x = 126,610.38

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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.