Home / 120,488.74-166,284.06-66,778.90

Finding the Fourth Proportional to 120,488.74, 166,284.06 and 66,778.90

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Solution

The fourth proportional to 120,488.74, 166,284.06 and 66,778.90 is: 92,160.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,488.74 : 166,284.06 = 66,778.90 : x
  2. Step 2: Convert to fraction form
    120,488.74/166,284.06 = 66,778.90/x
  3. Step 3: Cross multiply
    120,488.74x = 166,284.06 × 66,778.90
  4. Step 4: Simplify right side
    120,488.74x = 11,104,266,614.33
  5. Step 5: Solve for x
    x = 11,104,266,614.33/120,488.74
  6. Step 6: Final answer
    x = 92,160.20

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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.