Home / 120,977.75-166,949.30-67,985.75

Finding the Fourth Proportional to 120,977.75, 166,949.30 and 67,985.75

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Solution

The fourth proportional to 120,977.75, 166,949.30 and 67,985.75 is: 93,820.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,977.75 : 166,949.30 = 67,985.75 : x
  2. Step 2: Convert to fraction form
    120,977.75/166,949.30 = 67,985.75/x
  3. Step 3: Cross multiply
    120,977.75x = 166,949.30 × 67,985.75
  4. Step 4: Simplify right side
    120,977.75x = 11,350,173,372.48
  5. Step 5: Solve for x
    x = 11,350,173,372.48/120,977.75
  6. Step 6: Final answer
    x = 93,820.34

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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.