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Finding the Fourth Proportional to 120,613.70, 166,466.84 and 66,916.02

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Solution

The fourth proportional to 120,613.70, 166,466.84 and 66,916.02 is: 92,355.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,613.70 : 166,466.84 = 66,916.02 : x
  2. Step 2: Convert to fraction form
    120,613.70/166,466.84 = 66,916.02/x
  3. Step 3: Cross multiply
    120,613.70x = 166,466.84 × 66,916.02
  4. Step 4: Simplify right side
    120,613.70x = 11,139,297,435.95
  5. Step 5: Solve for x
    x = 11,139,297,435.95/120,613.70
  6. Step 6: Final answer
    x = 92,355.16

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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.