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Finding the Fourth Proportional to 120,605.68, 166,436.22 and 66,895.68

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Solution

The fourth proportional to 120,605.68, 166,436.22 and 66,895.68 is: 92,316.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,605.68 : 166,436.22 = 66,895.68 : x
  2. Step 2: Convert to fraction form
    120,605.68/166,436.22 = 66,895.68/x
  3. Step 3: Cross multiply
    120,605.68x = 166,436.22 × 66,895.68
  4. Step 4: Simplify right side
    120,605.68x = 11,133,864,113.53
  5. Step 5: Solve for x
    x = 11,133,864,113.53/120,605.68
  6. Step 6: Final answer
    x = 92,316.25

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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.