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Finding the Fourth Proportional to 105,960.78, 146,161.02 and 62,911.07

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Solution

The fourth proportional to 105,960.78, 146,161.02 and 62,911.07 is: 86,778.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,960.78 : 146,161.02 = 62,911.07 : x
  2. Step 2: Convert to fraction form
    105,960.78/146,161.02 = 62,911.07/x
  3. Step 3: Cross multiply
    105,960.78x = 146,161.02 × 62,911.07
  4. Step 4: Simplify right side
    105,960.78x = 9,195,146,160.49
  5. Step 5: Solve for x
    x = 9,195,146,160.49/105,960.78
  6. Step 6: Final answer
    x = 86,778.77

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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.