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Finding the Fourth Proportional to 128,497.41, 192,722.90 and 34,981.29

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Solution

The fourth proportional to 128,497.41, 192,722.90 and 34,981.29 is: 52,465.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,497.41 : 192,722.90 = 34,981.29 : x
  2. Step 2: Convert to fraction form
    128,497.41/192,722.90 = 34,981.29/x
  3. Step 3: Cross multiply
    128,497.41x = 192,722.90 × 34,981.29
  4. Step 4: Simplify right side
    128,497.41x = 6,741,695,479.63
  5. Step 5: Solve for x
    x = 6,741,695,479.63/128,497.41
  6. Step 6: Final answer
    x = 52,465.61

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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.