Home / 131,426.80-197,140.20-100,322.80

Finding the Fourth Proportional to 131,426.80, 197,140.20 and 100,322.80

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Solution

The fourth proportional to 131,426.80, 197,140.20 and 100,322.80 is: 150,484.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,426.80 : 197,140.20 = 100,322.80 : x
  2. Step 2: Convert to fraction form
    131,426.80/197,140.20 = 100,322.80/x
  3. Step 3: Cross multiply
    131,426.80x = 197,140.20 × 100,322.80
  4. Step 4: Simplify right side
    131,426.80x = 19,777,656,856.56
  5. Step 5: Solve for x
    x = 19,777,656,856.56/131,426.80
  6. Step 6: Final answer
    x = 150,484.20

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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.