Home / 139,678.41-192,756.81-76,016.13

Finding the Fourth Proportional to 139,678.41, 192,756.81 and 76,016.13

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Solution

The fourth proportional to 139,678.41, 192,756.81 and 76,016.13 is: 104,902.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,678.41 : 192,756.81 = 76,016.13 : x
  2. Step 2: Convert to fraction form
    139,678.41/192,756.81 = 76,016.13/x
  3. Step 3: Cross multiply
    139,678.41x = 192,756.81 × 76,016.13
  4. Step 4: Simplify right side
    139,678.41x = 14,652,626,727.35
  5. Step 5: Solve for x
    x = 14,652,626,727.35/139,678.41
  6. Step 6: Final answer
    x = 104,902.59

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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.