Home / 137,135.82-189,171.28-79,768.68

Finding the Fourth Proportional to 137,135.82, 189,171.28 and 79,768.68

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Solution

The fourth proportional to 137,135.82, 189,171.28 and 79,768.68 is: 110,036.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,135.82 : 189,171.28 = 79,768.68 : x
  2. Step 2: Convert to fraction form
    137,135.82/189,171.28 = 79,768.68/x
  3. Step 3: Cross multiply
    137,135.82x = 189,171.28 × 79,768.68
  4. Step 4: Simplify right side
    137,135.82x = 15,089,943,299.51
  5. Step 5: Solve for x
    x = 15,089,943,299.51/137,135.82
  6. Step 6: Final answer
    x = 110,036.48

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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.