Home / 137,768.14-190,119.94-77,338.90

Finding the Fourth Proportional to 137,768.14, 190,119.94 and 77,338.90

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Solution

The fourth proportional to 137,768.14, 190,119.94 and 77,338.90 is: 106,727.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,768.14 : 190,119.94 = 77,338.90 : x
  2. Step 2: Convert to fraction form
    137,768.14/190,119.94 = 77,338.90/x
  3. Step 3: Cross multiply
    137,768.14x = 190,119.94 × 77,338.90
  4. Step 4: Simplify right side
    137,768.14x = 14,703,667,071.97
  5. Step 5: Solve for x
    x = 14,703,667,071.97/137,768.14
  6. Step 6: Final answer
    x = 106,727.63

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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.