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Finding the Fourth Proportional to 175,999.80, 263,538.90 and 128,998.20

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Solution

The fourth proportional to 175,999.80, 263,538.90 and 128,998.20 is: 193,159.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,999.80 : 263,538.90 = 128,998.20 : x
  2. Step 2: Convert to fraction form
    175,999.80/263,538.90 = 128,998.20/x
  3. Step 3: Cross multiply
    175,999.80x = 263,538.90 × 128,998.20
  4. Step 4: Simplify right side
    175,999.80x = 33,996,043,729.98
  5. Step 5: Solve for x
    x = 33,996,043,729.98/175,999.80
  6. Step 6: Final answer
    x = 193,159.56

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1.5x scale

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.