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Finding the Fourth Proportional to 192,818.70, 266,086.89 and 107,938.80

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Solution

The fourth proportional to 192,818.70, 266,086.89 and 107,938.80 is: 148,953.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,818.70 : 266,086.89 = 107,938.80 : x
  2. Step 2: Convert to fraction form
    192,818.70/266,086.89 = 107,938.80/x
  3. Step 3: Cross multiply
    192,818.70x = 266,086.89 × 107,938.80
  4. Step 4: Simplify right side
    192,818.70x = 28,721,099,602.33
  5. Step 5: Solve for x
    x = 28,721,099,602.33/192,818.70
  6. Step 6: Final answer
    x = 148,953.91

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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.