Home / 197,121.60-295,755.30-78,877.80

Finding the Fourth Proportional to 197,121.60, 295,755.30 and 78,877.80

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Solution

The fourth proportional to 197,121.60, 295,755.30 and 78,877.80 is: 118,345.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,121.60 : 295,755.30 = 78,877.80 : x
  2. Step 2: Convert to fraction form
    197,121.60/295,755.30 = 78,877.80/x
  3. Step 3: Cross multiply
    197,121.60x = 295,755.30 × 78,877.80
  4. Step 4: Simplify right side
    197,121.60x = 23,328,527,402.34
  5. Step 5: Solve for x
    x = 23,328,527,402.34/197,121.60
  6. Step 6: Final answer
    x = 118,345.87

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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.