Home / 135,092.28-186,450.52-78,536.48

Finding the Fourth Proportional to 135,092.28, 186,450.52 and 78,536.48

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Solution

The fourth proportional to 135,092.28, 186,450.52 and 78,536.48 is: 108,393.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,092.28 : 186,450.52 = 78,536.48 : x
  2. Step 2: Convert to fraction form
    135,092.28/186,450.52 = 78,536.48/x
  3. Step 3: Cross multiply
    135,092.28x = 186,450.52 × 78,536.48
  4. Step 4: Simplify right side
    135,092.28x = 14,643,167,534.97
  5. Step 5: Solve for x
    x = 14,643,167,534.97/135,092.28
  6. Step 6: Final answer
    x = 108,393.81

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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.