Home / 137,234.88-189,388.80-80,645.28

Finding the Fourth Proportional to 137,234.88, 189,388.80 and 80,645.28

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Solution

The fourth proportional to 137,234.88, 189,388.80 and 80,645.28 is: 111,293.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,234.88 : 189,388.80 = 80,645.28 : x
  2. Step 2: Convert to fraction form
    137,234.88/189,388.80 = 80,645.28/x
  3. Step 3: Cross multiply
    137,234.88x = 189,388.80 × 80,645.28
  4. Step 4: Simplify right side
    137,234.88x = 15,273,312,804.86
  5. Step 5: Solve for x
    x = 15,273,312,804.86/137,234.88
  6. Step 6: Final answer
    x = 111,293.23

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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.