Home / 137,156.88-189,280.08-80,556.96

Finding the Fourth Proportional to 137,156.88, 189,280.08 and 80,556.96

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Solution

The fourth proportional to 137,156.88, 189,280.08 and 80,556.96 is: 111,170.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,156.88 : 189,280.08 = 80,556.96 : x
  2. Step 2: Convert to fraction form
    137,156.88/189,280.08 = 80,556.96/x
  3. Step 3: Cross multiply
    137,156.88x = 189,280.08 × 80,556.96
  4. Step 4: Simplify right side
    137,156.88x = 15,247,827,833.36
  5. Step 5: Solve for x
    x = 15,247,827,833.36/137,156.88
  6. Step 6: Final answer
    x = 111,170.71

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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.