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Finding the Fourth Proportional to 137,171.88, 189,302.58 and 80,582.76

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Solution

The fourth proportional to 137,171.88, 189,302.58 and 80,582.76 is: 111,207.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,171.88 : 189,302.58 = 80,582.76 : x
  2. Step 2: Convert to fraction form
    137,171.88/189,302.58 = 80,582.76/x
  3. Step 3: Cross multiply
    137,171.88x = 189,302.58 × 80,582.76
  4. Step 4: Simplify right side
    137,171.88x = 15,254,524,371.52
  5. Step 5: Solve for x
    x = 15,254,524,371.52/137,171.88
  6. Step 6: Final answer
    x = 111,207.37

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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.