Home / 137,174.40-189,259.20-80,553.60

Finding the Fourth Proportional to 137,174.40, 189,259.20 and 80,553.60

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Solution

The fourth proportional to 137,174.40, 189,259.20 and 80,553.60 is: 111,139.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,174.40 : 189,259.20 = 80,553.60 : x
  2. Step 2: Convert to fraction form
    137,174.40/189,259.20 = 80,553.60/x
  3. Step 3: Cross multiply
    137,174.40x = 189,259.20 × 80,553.60
  4. Step 4: Simplify right side
    137,174.40x = 15,245,509,893.12
  5. Step 5: Solve for x
    x = 15,245,509,893.12/137,174.40
  6. Step 6: Final answer
    x = 111,139.61

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1.5x scale

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.