Home / 139,843.07-192,989.31-76,184.36

Finding the Fourth Proportional to 139,843.07, 192,989.31 and 76,184.36

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Solution

The fourth proportional to 139,843.07, 192,989.31 and 76,184.36 is: 105,137.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,843.07 : 192,989.31 = 76,184.36 : x
  2. Step 2: Convert to fraction form
    139,843.07/192,989.31 = 76,184.36/x
  3. Step 3: Cross multiply
    139,843.07x = 192,989.31 × 76,184.36
  4. Step 4: Simplify right side
    139,843.07x = 14,702,767,069.19
  5. Step 5: Solve for x
    x = 14,702,767,069.19/139,843.07
  6. Step 6: Final answer
    x = 105,137.62

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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.