Home / 131,387.40-197,129.70-52,558.20

Finding the Fourth Proportional to 131,387.40, 197,129.70 and 52,558.20

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Solution

The fourth proportional to 131,387.40, 197,129.70 and 52,558.20 is: 78,856.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,387.40 : 197,129.70 = 52,558.20 : x
  2. Step 2: Convert to fraction form
    131,387.40/197,129.70 = 52,558.20/x
  3. Step 3: Cross multiply
    131,387.40x = 197,129.70 × 52,558.20
  4. Step 4: Simplify right side
    131,387.40x = 10,360,782,198.54
  5. Step 5: Solve for x
    x = 10,360,782,198.54/131,387.40
  6. Step 6: Final answer
    x = 78,856.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.