Home / 131,485.20-196,936.20-78,997.20

Finding the Fourth Proportional to 131,485.20, 196,936.20 and 78,997.20

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Solution

The fourth proportional to 131,485.20, 196,936.20 and 78,997.20 is: 118,320.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,485.20 : 196,936.20 = 78,997.20 : x
  2. Step 2: Convert to fraction form
    131,485.20/196,936.20 = 78,997.20/x
  3. Step 3: Cross multiply
    131,485.20x = 196,936.20 × 78,997.20
  4. Step 4: Simplify right side
    131,485.20x = 15,557,408,378.64
  5. Step 5: Solve for x
    x = 15,557,408,378.64/131,485.20
  6. Step 6: Final answer
    x = 118,320.60

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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.