Home / 198,939.64-298,300.40-78,874.96

Finding the Fourth Proportional to 198,939.64, 298,300.40 and 78,874.96

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Solution

The fourth proportional to 198,939.64, 298,300.40 and 78,874.96 is: 118,269.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,939.64 : 298,300.40 = 78,874.96 : x
  2. Step 2: Convert to fraction form
    198,939.64/298,300.40 = 78,874.96/x
  3. Step 3: Cross multiply
    198,939.64x = 298,300.40 × 78,874.96
  4. Step 4: Simplify right side
    198,939.64x = 23,528,432,117.98
  5. Step 5: Solve for x
    x = 23,528,432,117.98/198,939.64
  6. Step 6: Final answer
    x = 118,269.20

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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.