Home / 120,491.40-166,272.14-66,775.94

Finding the Fourth Proportional to 120,491.40, 166,272.14 and 66,775.94

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Solution

The fourth proportional to 120,491.40, 166,272.14 and 66,775.94 is: 92,147.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,491.40 : 166,272.14 = 66,775.94 : x
  2. Step 2: Convert to fraction form
    120,491.40/166,272.14 = 66,775.94/x
  3. Step 3: Cross multiply
    120,491.40x = 166,272.14 × 66,775.94
  4. Step 4: Simplify right side
    120,491.40x = 11,102,979,338.69
  5. Step 5: Solve for x
    x = 11,102,979,338.69/120,491.40
  6. Step 6: Final answer
    x = 92,147.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.