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Finding the Fourth Proportional to 199,946.40, 299,773.80 and 81,556.80

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Solution

The fourth proportional to 199,946.40, 299,773.80 and 81,556.80 is: 122,275.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,946.40 : 299,773.80 = 81,556.80 : x
  2. Step 2: Convert to fraction form
    199,946.40/299,773.80 = 81,556.80/x
  3. Step 3: Cross multiply
    199,946.40x = 299,773.80 × 81,556.80
  4. Step 4: Simplify right side
    199,946.40x = 24,448,591,851.84
  5. Step 5: Solve for x
    x = 24,448,591,851.84/199,946.40
  6. Step 6: Final answer
    x = 122,275.73

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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.