Home / 190,493.31-285,739.97-78,154.41

Finding the Fourth Proportional to 190,493.31, 285,739.97 and 78,154.41

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Solution

The fourth proportional to 190,493.31, 285,739.97 and 78,154.41 is: 117,231.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,493.31 : 285,739.97 = 78,154.41 : x
  2. Step 2: Convert to fraction form
    190,493.31/285,739.97 = 78,154.41/x
  3. Step 3: Cross multiply
    190,493.31x = 285,739.97 × 78,154.41
  4. Step 4: Simplify right side
    190,493.31x = 22,331,838,378.00
  5. Step 5: Solve for x
    x = 22,331,838,378.00/190,493.31
  6. Step 6: Final answer
    x = 117,231.62

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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.