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Finding the Fourth Proportional to 166,070.20, 248,935.20 and 81,700.60

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Solution

The fourth proportional to 166,070.20, 248,935.20 and 81,700.60 is: 122,467.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,070.20 : 248,935.20 = 81,700.60 : x
  2. Step 2: Convert to fraction form
    166,070.20/248,935.20 = 81,700.60/x
  3. Step 3: Cross multiply
    166,070.20x = 248,935.20 × 81,700.60
  4. Step 4: Simplify right side
    166,070.20x = 20,338,155,201.12
  5. Step 5: Solve for x
    x = 20,338,155,201.12/166,070.20
  6. Step 6: Final answer
    x = 122,467.22

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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.