Home / 198,541.05-297,811.64-72,157.83

Finding the Fourth Proportional to 198,541.05, 297,811.64 and 72,157.83

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Solution

The fourth proportional to 198,541.05, 297,811.64 and 72,157.83 is: 108,236.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,541.05 : 297,811.64 = 72,157.83 : x
  2. Step 2: Convert to fraction form
    198,541.05/297,811.64 = 72,157.83/x
  3. Step 3: Cross multiply
    198,541.05x = 297,811.64 × 72,157.83
  4. Step 4: Simplify right side
    198,541.05x = 21,489,441,691.14
  5. Step 5: Solve for x
    x = 21,489,441,691.14/198,541.05
  6. Step 6: Final answer
    x = 108,236.77

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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.