Home / 190,399.80-285,405.30-111,473.40

Finding the Fourth Proportional to 190,399.80, 285,405.30 and 111,473.40

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Solution

The fourth proportional to 190,399.80, 285,405.30 and 111,473.40 is: 167,096.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,399.80 : 285,405.30 = 111,473.40 : x
  2. Step 2: Convert to fraction form
    190,399.80/285,405.30 = 111,473.40/x
  3. Step 3: Cross multiply
    190,399.80x = 285,405.30 × 111,473.40
  4. Step 4: Simplify right side
    190,399.80x = 31,815,099,169.02
  5. Step 5: Solve for x
    x = 31,815,099,169.02/190,399.80
  6. Step 6: Final answer
    x = 167,096.28

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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.