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Finding the Fourth Proportional to 120,313.62, 166,035.15 and 66,597.12

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Solution

The fourth proportional to 120,313.62, 166,035.15 and 66,597.12 is: 91,905.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,313.62 : 166,035.15 = 66,597.12 : x
  2. Step 2: Convert to fraction form
    120,313.62/166,035.15 = 66,597.12/x
  3. Step 3: Cross multiply
    120,313.62x = 166,035.15 × 66,597.12
  4. Step 4: Simplify right side
    120,313.62x = 11,057,462,808.77
  5. Step 5: Solve for x
    x = 11,057,462,808.77/120,313.62
  6. Step 6: Final answer
    x = 91,905.33

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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.