Home / 190,428.72-285,683.13-72,097.44

Finding the Fourth Proportional to 190,428.72, 285,683.13 and 72,097.44

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Solution

The fourth proportional to 190,428.72, 285,683.13 and 72,097.44 is: 108,161.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,428.72 : 285,683.13 = 72,097.44 : x
  2. Step 2: Convert to fraction form
    190,428.72/285,683.13 = 72,097.44/x
  3. Step 3: Cross multiply
    190,428.72x = 285,683.13 × 72,097.44
  4. Step 4: Simplify right side
    190,428.72x = 20,597,022,324.19
  5. Step 5: Solve for x
    x = 20,597,022,324.19/190,428.72
  6. Step 6: Final answer
    x = 108,161.32

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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.