Home / 120,613.72-166,457.13-66,916

Finding the Fourth Proportional to 120,613.72, 166,457.13 and 66,916

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Solution

The fourth proportional to 120,613.72, 166,457.13 and 66,916 is: 92,349.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,613.72 : 166,457.13 = 66,916 : x
  2. Step 2: Convert to fraction form
    120,613.72/166,457.13 = 66,916/x
  3. Step 3: Cross multiply
    120,613.72x = 166,457.13 × 66,916
  4. Step 4: Simplify right side
    120,613.72x = 11,138,645,311.08
  5. Step 5: Solve for x
    x = 11,138,645,311.08/120,613.72
  6. Step 6: Final answer
    x = 92,349.74

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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.