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Finding the Fourth Proportional to 164,873.40, 247,310.10 and 81,756.60

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Solution

The fourth proportional to 164,873.40, 247,310.10 and 81,756.60 is: 122,634.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,873.40 : 247,310.10 = 81,756.60 : x
  2. Step 2: Convert to fraction form
    164,873.40/247,310.10 = 81,756.60/x
  3. Step 3: Cross multiply
    164,873.40x = 247,310.10 × 81,756.60
  4. Step 4: Simplify right side
    164,873.40x = 20,219,232,921.66
  5. Step 5: Solve for x
    x = 20,219,232,921.66/164,873.40
  6. Step 6: Final answer
    x = 122,634.90

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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.