Home / 166,071.20-248,936.70-81,701.60

Finding the Fourth Proportional to 166,071.20, 248,936.70 and 81,701.60

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Solution

The fourth proportional to 166,071.20, 248,936.70 and 81,701.60 is: 122,468.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,071.20 : 248,936.70 = 81,701.60 : x
  2. Step 2: Convert to fraction form
    166,071.20/248,936.70 = 81,701.60/x
  3. Step 3: Cross multiply
    166,071.20x = 248,936.70 × 81,701.60
  4. Step 4: Simplify right side
    166,071.20x = 20,338,526,688.72
  5. Step 5: Solve for x
    x = 20,338,526,688.72/166,071.20
  6. Step 6: Final answer
    x = 122,468.72

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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.