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Finding the Fourth Proportional to 141,391.71, 195,124.29 and 76,865.29

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Solution

The fourth proportional to 141,391.71, 195,124.29 and 76,865.29 is: 106,076.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,391.71 : 195,124.29 = 76,865.29 : x
  2. Step 2: Convert to fraction form
    141,391.71/195,124.29 = 76,865.29/x
  3. Step 3: Cross multiply
    141,391.71x = 195,124.29 × 76,865.29
  4. Step 4: Simplify right side
    141,391.71x = 14,998,285,136.89
  5. Step 5: Solve for x
    x = 14,998,285,136.89/141,391.71
  6. Step 6: Final answer
    x = 106,076.13

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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.