Home / 120,708.11-166,574.01-66,991.74

Finding the Fourth Proportional to 120,708.11, 166,574.01 and 66,991.74

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Solution

The fourth proportional to 120,708.11, 166,574.01 and 66,991.74 is: 92,446.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,708.11 : 166,574.01 = 66,991.74 : x
  2. Step 2: Convert to fraction form
    120,708.11/166,574.01 = 66,991.74/x
  3. Step 3: Cross multiply
    120,708.11x = 166,574.01 × 66,991.74
  4. Step 4: Simplify right side
    120,708.11x = 11,159,082,768.68
  5. Step 5: Solve for x
    x = 11,159,082,768.68/120,708.11
  6. Step 6: Final answer
    x = 92,446.84

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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.