Home / 198,929.86-298,395.60-80,603.44

Finding the Fourth Proportional to 198,929.86, 298,395.60 and 80,603.44

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Solution

The fourth proportional to 198,929.86, 298,395.60 and 80,603.44 is: 120,905.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,929.86 : 298,395.60 = 80,603.44 : x
  2. Step 2: Convert to fraction form
    198,929.86/298,395.60 = 80,603.44/x
  3. Step 3: Cross multiply
    198,929.86x = 298,395.60 × 80,603.44
  4. Step 4: Simplify right side
    198,929.86x = 24,051,711,840.86
  5. Step 5: Solve for x
    x = 24,051,711,840.86/198,929.86
  6. Step 6: Final answer
    x = 120,905.49

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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.