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Finding the Fourth Proportional to 199,794.70, 299,436.90 and 81,332.20

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Solution

The fourth proportional to 199,794.70, 299,436.90 and 81,332.20 is: 121,894.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,794.70 : 299,436.90 = 81,332.20 : x
  2. Step 2: Convert to fraction form
    199,794.70/299,436.90 = 81,332.20/x
  3. Step 3: Cross multiply
    199,794.70x = 299,436.90 × 81,332.20
  4. Step 4: Simplify right side
    199,794.70x = 24,353,861,838.18
  5. Step 5: Solve for x
    x = 24,353,861,838.18/199,794.70
  6. Step 6: Final answer
    x = 121,894.43

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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.