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Finding the Fourth Proportional to 120,695.77, 166,560.25 and 66,980.82

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Solution

The fourth proportional to 120,695.77, 166,560.25 and 66,980.82 is: 92,433.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,695.77 : 166,560.25 = 66,980.82 : x
  2. Step 2: Convert to fraction form
    120,695.77/166,560.25 = 66,980.82/x
  3. Step 3: Cross multiply
    120,695.77x = 166,560.25 × 66,980.82
  4. Step 4: Simplify right side
    120,695.77x = 11,156,342,124.41
  5. Step 5: Solve for x
    x = 11,156,342,124.41/120,695.77
  6. Step 6: Final answer
    x = 92,433.58

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1.5x scale

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.