Home / 135,378.72-186,796.08-85,048.56

Finding the Fourth Proportional to 135,378.72, 186,796.08 and 85,048.56

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Solution

The fourth proportional to 135,378.72, 186,796.08 and 85,048.56 is: 117,350.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,378.72 : 186,796.08 = 85,048.56 : x
  2. Step 2: Convert to fraction form
    135,378.72/186,796.08 = 85,048.56/x
  3. Step 3: Cross multiply
    135,378.72x = 186,796.08 × 85,048.56
  4. Step 4: Simplify right side
    135,378.72x = 15,886,737,617.64
  5. Step 5: Solve for x
    x = 15,886,737,617.64/135,378.72
  6. Step 6: Final answer
    x = 117,350.33

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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.