Home / 134,992.80-186,258.24-78,370.56

Finding the Fourth Proportional to 134,992.80, 186,258.24 and 78,370.56

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Solution

The fourth proportional to 134,992.80, 186,258.24 and 78,370.56 is: 108,132.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,992.80 : 186,258.24 = 78,370.56 : x
  2. Step 2: Convert to fraction form
    134,992.80/186,258.24 = 78,370.56/x
  3. Step 3: Cross multiply
    134,992.80x = 186,258.24 × 78,370.56
  4. Step 4: Simplify right side
    134,992.80x = 14,597,162,573.41
  5. Step 5: Solve for x
    x = 14,597,162,573.41/134,992.80
  6. Step 6: Final answer
    x = 108,132.90

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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.