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Finding the Fourth Proportional to 101,478.66, 152,172.99 and 54,084.92

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Solution

The fourth proportional to 101,478.66, 152,172.99 and 54,084.92 is: 81,103.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,478.66 : 152,172.99 = 54,084.92 : x
  2. Step 2: Convert to fraction form
    101,478.66/152,172.99 = 54,084.92/x
  3. Step 3: Cross multiply
    101,478.66x = 152,172.99 × 54,084.92
  4. Step 4: Simplify right side
    101,478.66x = 8,230,263,800.09
  5. Step 5: Solve for x
    x = 8,230,263,800.09/101,478.66
  6. Step 6: Final answer
    x = 81,103.39

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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.