Home / 131,919.84-197,923.50-87,720.57

Finding the Fourth Proportional to 131,919.84, 197,923.50 and 87,720.57

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Solution

The fourth proportional to 131,919.84, 197,923.50 and 87,720.57 is: 131,609.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,919.84 : 197,923.50 = 87,720.57 : x
  2. Step 2: Convert to fraction form
    131,919.84/197,923.50 = 87,720.57/x
  3. Step 3: Cross multiply
    131,919.84x = 197,923.50 × 87,720.57
  4. Step 4: Simplify right side
    131,919.84x = 17,361,962,236.40
  5. Step 5: Solve for x
    x = 17,361,962,236.40/131,919.84
  6. Step 6: Final answer
    x = 131,609.94

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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.