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Finding the Fourth Proportional to 101,181.60, 151,772.40 and 61,815.60

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Solution

The fourth proportional to 101,181.60, 151,772.40 and 61,815.60 is: 92,723.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,181.60 : 151,772.40 = 61,815.60 : x
  2. Step 2: Convert to fraction form
    101,181.60/151,772.40 = 61,815.60/x
  3. Step 3: Cross multiply
    101,181.60x = 151,772.40 × 61,815.60
  4. Step 4: Simplify right side
    101,181.60x = 9,381,901,969.44
  5. Step 5: Solve for x
    x = 9,381,901,969.44/101,181.60
  6. Step 6: Final answer
    x = 92,723.40

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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.