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Finding the Fourth Proportional to 120,642.53, 166,486.89 and 66,927.55

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Solution

The fourth proportional to 120,642.53, 166,486.89 and 66,927.55 is: 92,360.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,642.53 : 166,486.89 = 66,927.55 : x
  2. Step 2: Convert to fraction form
    120,642.53/166,486.89 = 66,927.55/x
  3. Step 3: Cross multiply
    120,642.53x = 166,486.89 × 66,927.55
  4. Step 4: Simplify right side
    120,642.53x = 11,142,559,676.25
  5. Step 5: Solve for x
    x = 11,142,559,676.25/120,642.53
  6. Step 6: Final answer
    x = 92,360.13

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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.