Home / 139,769.15-192,881.66-76,107.20

Finding the Fourth Proportional to 139,769.15, 192,881.66 and 76,107.20

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Solution

The fourth proportional to 139,769.15, 192,881.66 and 76,107.20 is: 105,028.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,769.15 : 192,881.66 = 76,107.20 : x
  2. Step 2: Convert to fraction form
    139,769.15/192,881.66 = 76,107.20/x
  3. Step 3: Cross multiply
    139,769.15x = 192,881.66 × 76,107.20
  4. Step 4: Simplify right side
    139,769.15x = 14,679,681,729.01
  5. Step 5: Solve for x
    x = 14,679,681,729.01/139,769.15
  6. Step 6: Final answer
    x = 105,028.06

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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.