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Finding the Fourth Proportional to 120,372.24, 166,113.56 and 66,657.24

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Solution

The fourth proportional to 120,372.24, 166,113.56 and 66,657.24 is: 91,986.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,372.24 : 166,113.56 = 66,657.24 : x
  2. Step 2: Convert to fraction form
    120,372.24/166,113.56 = 66,657.24/x
  3. Step 3: Cross multiply
    120,372.24x = 166,113.56 × 66,657.24
  4. Step 4: Simplify right side
    120,372.24x = 11,072,671,436.17
  5. Step 5: Solve for x
    x = 11,072,671,436.17/120,372.24
  6. Step 6: Final answer
    x = 91,986.92

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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.