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Finding the Fourth Proportional to 128,364,811.11, 192,555,271.08 and 36,255,761.37

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Solution

The fourth proportional to 128,364,811.11, 192,555,271.08 and 36,255,761.37 is: 54,385,916.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,364,811.11 : 192,555,271.08 = 36,255,761.37 : x
  2. Step 2: Convert to fraction form
    128,364,811.11/192,555,271.08 = 36,255,761.37/x
  3. Step 3: Cross multiply
    128,364,811.11x = 192,555,271.08 × 36,255,761.37
  4. Step 4: Simplify right side
    128,364,811.11x = 6,981,237,958,812,142
  5. Step 5: Solve for x
    x = 6,981,237,958,812,142/128,364,811.11
  6. Step 6: Final answer
    x = 54,385,916.97

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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.