Home / 128,687.28-193,036.32-35,192.88

Finding the Fourth Proportional to 128,687.28, 193,036.32 and 35,192.88

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Solution

The fourth proportional to 128,687.28, 193,036.32 and 35,192.88 is: 52,790.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,687.28 : 193,036.32 = 35,192.88 : x
  2. Step 2: Convert to fraction form
    128,687.28/193,036.32 = 35,192.88/x
  3. Step 3: Cross multiply
    128,687.28x = 193,036.32 × 35,192.88
  4. Step 4: Simplify right side
    128,687.28x = 6,793,504,045.40
  5. Step 5: Solve for x
    x = 6,793,504,045.40/128,687.28
  6. Step 6: Final answer
    x = 52,790.80

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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.