Home / 199,603.35-299,405.03-128,744.55

Finding the Fourth Proportional to 199,603.35, 299,405.03 and 128,744.55

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Solution

The fourth proportional to 199,603.35, 299,405.03 and 128,744.55 is: 193,116.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,603.35 : 299,405.03 = 128,744.55 : x
  2. Step 2: Convert to fraction form
    199,603.35/299,405.03 = 128,744.55/x
  3. Step 3: Cross multiply
    199,603.35x = 299,405.03 × 128,744.55
  4. Step 4: Simplify right side
    199,603.35x = 38,546,765,211.36
  5. Step 5: Solve for x
    x = 38,546,765,211.36/199,603.35
  6. Step 6: Final answer
    x = 193,116.83

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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.