Home / 187,438.40-280,846.56-131,917.76

Finding the Fourth Proportional to 187,438.40, 280,846.56 and 131,917.76

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Solution

The fourth proportional to 187,438.40, 280,846.56 and 131,917.76 is: 197,657.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,438.40 : 280,846.56 = 131,917.76 : x
  2. Step 2: Convert to fraction form
    187,438.40/280,846.56 = 131,917.76/x
  3. Step 3: Cross multiply
    187,438.40x = 280,846.56 × 131,917.76
  4. Step 4: Simplify right side
    187,438.40x = 37,048,649,098.91
  5. Step 5: Solve for x
    x = 37,048,649,098.91/187,438.40
  6. Step 6: Final answer
    x = 197,657.73

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1.5x scale

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.