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Finding the Fourth Proportional to 128,496.96, 192,641.52 and 53,674.41

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Solution

The fourth proportional to 128,496.96, 192,641.52 and 53,674.41 is: 80,468.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,496.96 : 192,641.52 = 53,674.41 : x
  2. Step 2: Convert to fraction form
    128,496.96/192,641.52 = 53,674.41/x
  3. Step 3: Cross multiply
    128,496.96x = 192,641.52 × 53,674.41
  4. Step 4: Simplify right side
    128,496.96x = 10,339,919,927.50
  5. Step 5: Solve for x
    x = 10,339,919,927.50/128,496.96
  6. Step 6: Final answer
    x = 80,468.21

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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.