Home / 129,976.88-179,369.31-76,262.81

Finding the Fourth Proportional to 129,976.88, 179,369.31 and 76,262.81

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Solution

The fourth proportional to 129,976.88, 179,369.31 and 76,262.81 is: 105,243.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,976.88 : 179,369.31 = 76,262.81 : x
  2. Step 2: Convert to fraction form
    129,976.88/179,369.31 = 76,262.81/x
  3. Step 3: Cross multiply
    129,976.88x = 179,369.31 × 76,262.81
  4. Step 4: Simplify right side
    129,976.88x = 13,679,206,711.51
  5. Step 5: Solve for x
    x = 13,679,206,711.51/129,976.88
  6. Step 6: Final answer
    x = 105,243.39

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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.