Home / 120,900.08-166,838.78-67,183.72

Finding the Fourth Proportional to 120,900.08, 166,838.78 and 67,183.72

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Solution

The fourth proportional to 120,900.08, 166,838.78 and 67,183.72 is: 92,711.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,900.08 : 166,838.78 = 67,183.72 : x
  2. Step 2: Convert to fraction form
    120,900.08/166,838.78 = 67,183.72/x
  3. Step 3: Cross multiply
    120,900.08x = 166,838.78 × 67,183.72
  4. Step 4: Simplify right side
    120,900.08x = 11,208,849,880.66
  5. Step 5: Solve for x
    x = 11,208,849,880.66/120,900.08
  6. Step 6: Final answer
    x = 92,711.68

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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.