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Finding the Fourth Proportional to 139,726.99, 192,849.81 and 79,303.29

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Solution

The fourth proportional to 139,726.99, 192,849.81 and 79,303.29 is: 109,453.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,726.99 : 192,849.81 = 79,303.29 : x
  2. Step 2: Convert to fraction form
    139,726.99/192,849.81 = 79,303.29/x
  3. Step 3: Cross multiply
    139,726.99x = 192,849.81 × 79,303.29
  4. Step 4: Simplify right side
    139,726.99x = 15,293,624,408.87
  5. Step 5: Solve for x
    x = 15,293,624,408.87/139,726.99
  6. Step 6: Final answer
    x = 109,453.62

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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.