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Finding the Fourth Proportional to 199,120.60, 299,141.70 and 136,912.60

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Solution

The fourth proportional to 199,120.60, 299,141.70 and 136,912.60 is: 205,685.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,120.60 : 299,141.70 = 136,912.60 : x
  2. Step 2: Convert to fraction form
    199,120.60/299,141.70 = 136,912.60/x
  3. Step 3: Cross multiply
    199,120.60x = 299,141.70 × 136,912.60
  4. Step 4: Simplify right side
    199,120.60x = 40,956,267,915.42
  5. Step 5: Solve for x
    x = 40,956,267,915.42/199,120.60
  6. Step 6: Final answer
    x = 205,685.74

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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.