Home / 198,153.39-297,226.65-79,821.72

Finding the Fourth Proportional to 198,153.39, 297,226.65 and 79,821.72

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Solution

The fourth proportional to 198,153.39, 297,226.65 and 79,821.72 is: 119,731.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,153.39 : 297,226.65 = 79,821.72 : x
  2. Step 2: Convert to fraction form
    198,153.39/297,226.65 = 79,821.72/x
  3. Step 3: Cross multiply
    198,153.39x = 297,226.65 × 79,821.72
  4. Step 4: Simplify right side
    198,153.39x = 23,725,142,432.84
  5. Step 5: Solve for x
    x = 23,725,142,432.84/198,153.39
  6. Step 6: Final answer
    x = 119,731.20

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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.