Home / 139,721.13-192,816.06-76,058.91

Finding the Fourth Proportional to 139,721.13, 192,816.06 and 76,058.91

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Solution

The fourth proportional to 139,721.13, 192,816.06 and 76,058.91 is: 104,961.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,721.13 : 192,816.06 = 76,058.91 : x
  2. Step 2: Convert to fraction form
    139,721.13/192,816.06 = 76,058.91/x
  3. Step 3: Cross multiply
    139,721.13x = 192,816.06 × 76,058.91
  4. Step 4: Simplify right side
    139,721.13x = 14,665,379,354.09
  5. Step 5: Solve for x
    x = 14,665,379,354.09/139,721.13
  6. Step 6: Final answer
    x = 104,961.79

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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.