Home / 190,431.22-285,686.88-72,099.94

Finding the Fourth Proportional to 190,431.22, 285,686.88 and 72,099.94

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Solution

The fourth proportional to 190,431.22, 285,686.88 and 72,099.94 is: 108,165.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,431.22 : 285,686.88 = 72,099.94 : x
  2. Step 2: Convert to fraction form
    190,431.22/285,686.88 = 72,099.94/x
  3. Step 3: Cross multiply
    190,431.22x = 285,686.88 × 72,099.94
  4. Step 4: Simplify right side
    190,431.22x = 20,598,006,906.79
  5. Step 5: Solve for x
    x = 20,598,006,906.79/190,431.22
  6. Step 6: Final answer
    x = 108,165.07

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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.