Home / 68,099.28-102,148.92-21,355.80

Finding the Fourth Proportional to 68,099.28, 102,148.92 and 21,355.80

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Solution

The fourth proportional to 68,099.28, 102,148.92 and 21,355.80 is: 32,033.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,099.28 : 102,148.92 = 21,355.80 : x
  2. Step 2: Convert to fraction form
    68,099.28/102,148.92 = 21,355.80/x
  3. Step 3: Cross multiply
    68,099.28x = 102,148.92 × 21,355.80
  4. Step 4: Simplify right side
    68,099.28x = 2,181,471,905.74
  5. Step 5: Solve for x
    x = 2,181,471,905.74/68,099.28
  6. Step 6: Final answer
    x = 32,033.70

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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.