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Finding the Fourth Proportional to 120,596.88, 166,426.74 and 66,890.64

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Solution

The fourth proportional to 120,596.88, 166,426.74 and 66,890.64 is: 92,310.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,596.88 : 166,426.74 = 66,890.64 : x
  2. Step 2: Convert to fraction form
    120,596.88/166,426.74 = 66,890.64/x
  3. Step 3: Cross multiply
    120,596.88x = 166,426.74 × 66,890.64
  4. Step 4: Simplify right side
    120,596.88x = 11,132,391,151.71
  5. Step 5: Solve for x
    x = 11,132,391,151.71/120,596.88
  6. Step 6: Final answer
    x = 92,310.77

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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.