Home / 137,012.26-189,076.85-80,423.64

Finding the Fourth Proportional to 137,012.26, 189,076.85 and 80,423.64

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Solution

The fourth proportional to 137,012.26, 189,076.85 and 80,423.64 is: 110,984.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,012.26 : 189,076.85 = 80,423.64 : x
  2. Step 2: Convert to fraction form
    137,012.26/189,076.85 = 80,423.64/x
  3. Step 3: Cross multiply
    137,012.26x = 189,076.85 × 80,423.64
  4. Step 4: Simplify right side
    137,012.26x = 15,206,248,175.59
  5. Step 5: Solve for x
    x = 15,206,248,175.59/137,012.26
  6. Step 6: Final answer
    x = 110,984.58

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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.