Home / 129,861.60-194,792.40-109,194.45

Finding the Fourth Proportional to 129,861.60, 194,792.40 and 109,194.45

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Solution

The fourth proportional to 129,861.60, 194,792.40 and 109,194.45 is: 163,791.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,861.60 : 194,792.40 = 109,194.45 : x
  2. Step 2: Convert to fraction form
    129,861.60/194,792.40 = 109,194.45/x
  3. Step 3: Cross multiply
    129,861.60x = 194,792.40 × 109,194.45
  4. Step 4: Simplify right side
    129,861.60x = 21,270,248,982.18
  5. Step 5: Solve for x
    x = 21,270,248,982.18/129,861.60
  6. Step 6: Final answer
    x = 163,791.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.