Home / 109,639.88-151,306.68-67,190.21

Finding the Fourth Proportional to 109,639.88, 151,306.68 and 67,190.21

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Solution

The fourth proportional to 109,639.88, 151,306.68 and 67,190.21 is: 92,724.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,639.88 : 151,306.68 = 67,190.21 : x
  2. Step 2: Convert to fraction form
    109,639.88/151,306.68 = 67,190.21/x
  3. Step 3: Cross multiply
    109,639.88x = 151,306.68 × 67,190.21
  4. Step 4: Simplify right side
    109,639.88x = 10,166,326,847.07
  5. Step 5: Solve for x
    x = 10,166,326,847.07/109,639.88
  6. Step 6: Final answer
    x = 92,724.72

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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.