Home / 131,027.20-196,249.20-128,111.20

Finding the Fourth Proportional to 131,027.20, 196,249.20 and 128,111.20

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Solution

The fourth proportional to 131,027.20, 196,249.20 and 128,111.20 is: 191,881.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,027.20 : 196,249.20 = 128,111.20 : x
  2. Step 2: Convert to fraction form
    131,027.20/196,249.20 = 128,111.20/x
  3. Step 3: Cross multiply
    131,027.20x = 196,249.20 × 128,111.20
  4. Step 4: Simplify right side
    131,027.20x = 25,141,720,511.04
  5. Step 5: Solve for x
    x = 25,141,720,511.04/131,027.20
  6. Step 6: Final answer
    x = 191,881.69

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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.