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Finding the Fourth Proportional to 103,208.56, 154,806.28 and 36,639.92

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Solution

The fourth proportional to 103,208.56, 154,806.28 and 36,639.92 is: 54,957.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,208.56 : 154,806.28 = 36,639.92 : x
  2. Step 2: Convert to fraction form
    103,208.56/154,806.28 = 36,639.92/x
  3. Step 3: Cross multiply
    103,208.56x = 154,806.28 × 36,639.92
  4. Step 4: Simplify right side
    103,208.56x = 5,672,089,714.70
  5. Step 5: Solve for x
    x = 5,672,089,714.70/103,208.56
  6. Step 6: Final answer
    x = 54,957.55

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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.