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Finding the Fourth Proportional to 197,145.30, 295,555.95 and 84,911.70

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Solution

The fourth proportional to 197,145.30, 295,555.95 and 84,911.70 is: 127,297.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,145.30 : 295,555.95 = 84,911.70 : x
  2. Step 2: Convert to fraction form
    197,145.30/295,555.95 = 84,911.70/x
  3. Step 3: Cross multiply
    197,145.30x = 295,555.95 × 84,911.70
  4. Step 4: Simplify right side
    197,145.30x = 25,096,158,159.62
  5. Step 5: Solve for x
    x = 25,096,158,159.62/197,145.30
  6. Step 6: Final answer
    x = 127,297.78

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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.