Home / 120,499.10-166,288.78-66,787.58

Finding the Fourth Proportional to 120,499.10, 166,288.78 and 66,787.58

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Solution

The fourth proportional to 120,499.10, 166,288.78 and 66,787.58 is: 92,166.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,499.10 : 166,288.78 = 66,787.58 : x
  2. Step 2: Convert to fraction form
    120,499.10/166,288.78 = 66,787.58/x
  3. Step 3: Cross multiply
    120,499.10x = 166,288.78 × 66,787.58
  4. Step 4: Simplify right side
    120,499.10x = 11,106,025,197.35
  5. Step 5: Solve for x
    x = 11,106,025,197.35/120,499.10
  6. Step 6: Final answer
    x = 92,166.87

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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.