Home / 139,424.51-192,405.31-79,006.66

Finding the Fourth Proportional to 139,424.51, 192,405.31 and 79,006.66

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Solution

The fourth proportional to 139,424.51, 192,405.31 and 79,006.66 is: 109,028.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,424.51 : 192,405.31 = 79,006.66 : x
  2. Step 2: Convert to fraction form
    139,424.51/192,405.31 = 79,006.66/x
  3. Step 3: Cross multiply
    139,424.51x = 192,405.31 × 79,006.66
  4. Step 4: Simplify right side
    139,424.51x = 15,201,300,909.36
  5. Step 5: Solve for x
    x = 15,201,300,909.36/139,424.51
  6. Step 6: Final answer
    x = 109,028.90

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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.