Home / 198,919.32-298,285.02-72,471.06

Finding the Fourth Proportional to 198,919.32, 298,285.02 and 72,471.06

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Solution

The fourth proportional to 198,919.32, 298,285.02 and 72,471.06 is: 108,672.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,919.32 : 298,285.02 = 72,471.06 : x
  2. Step 2: Convert to fraction form
    198,919.32/298,285.02 = 72,471.06/x
  3. Step 3: Cross multiply
    198,919.32x = 298,285.02 × 72,471.06
  4. Step 4: Simplify right side
    198,919.32x = 21,617,031,581.52
  5. Step 5: Solve for x
    x = 21,617,031,581.52/198,919.32
  6. Step 6: Final answer
    x = 108,672.36

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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.