Home / 120,863.28-166,744.80-89,107.68

Finding the Fourth Proportional to 120,863.28, 166,744.80 and 89,107.68

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Solution

The fourth proportional to 120,863.28, 166,744.80 and 89,107.68 is: 122,934.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,863.28 : 166,744.80 = 89,107.68 : x
  2. Step 2: Convert to fraction form
    120,863.28/166,744.80 = 89,107.68/x
  3. Step 3: Cross multiply
    120,863.28x = 166,744.80 × 89,107.68
  4. Step 4: Simplify right side
    120,863.28x = 14,858,242,280.06
  5. Step 5: Solve for x
    x = 14,858,242,280.06/120,863.28
  6. Step 6: Final answer
    x = 122,934.30

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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.