Home / 128,198.53-192,316.01-39,459.43

Finding the Fourth Proportional to 128,198.53, 192,316.01 and 39,459.43

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Solution

The fourth proportional to 128,198.53, 192,316.01 and 39,459.43 is: 59,194.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,198.53 : 192,316.01 = 39,459.43 : x
  2. Step 2: Convert to fraction form
    128,198.53/192,316.01 = 39,459.43/x
  3. Step 3: Cross multiply
    128,198.53x = 192,316.01 × 39,459.43
  4. Step 4: Simplify right side
    128,198.53x = 7,588,680,134.47
  5. Step 5: Solve for x
    x = 7,588,680,134.47/128,198.53
  6. Step 6: Final answer
    x = 59,194.75

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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.