Home / 120,391.81-166,142.44-69,403.59

Finding the Fourth Proportional to 120,391.81, 166,142.44 and 69,403.59

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Solution

The fourth proportional to 120,391.81, 166,142.44 and 69,403.59 is: 95,777.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,391.81 : 166,142.44 = 69,403.59 : x
  2. Step 2: Convert to fraction form
    120,391.81/166,142.44 = 69,403.59/x
  3. Step 3: Cross multiply
    120,391.81x = 166,142.44 × 69,403.59
  4. Step 4: Simplify right side
    120,391.81x = 11,530,881,787.36
  5. Step 5: Solve for x
    x = 11,530,881,787.36/120,391.81
  6. Step 6: Final answer
    x = 95,777.96

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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.