Home / 70,196.20-105,263.58-20,936.68

Finding the Fourth Proportional to 70,196.20, 105,263.58 and 20,936.68

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Solution

The fourth proportional to 70,196.20, 105,263.58 and 20,936.68 is: 31,395.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,196.20 : 105,263.58 = 20,936.68 : x
  2. Step 2: Convert to fraction form
    70,196.20/105,263.58 = 20,936.68/x
  3. Step 3: Cross multiply
    70,196.20x = 105,263.58 × 20,936.68
  4. Step 4: Simplify right side
    70,196.20x = 2,203,869,890.11
  5. Step 5: Solve for x
    x = 2,203,869,890.11/70,196.20
  6. Step 6: Final answer
    x = 31,395.86

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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.