Home / 190,538.83-285,559.09-78,087.39

Finding the Fourth Proportional to 190,538.83, 285,559.09 and 78,087.39

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Solution

The fourth proportional to 190,538.83, 285,559.09 and 78,087.39 is: 117,028.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,538.83 : 285,559.09 = 78,087.39 : x
  2. Step 2: Convert to fraction form
    190,538.83/285,559.09 = 78,087.39/x
  3. Step 3: Cross multiply
    190,538.83x = 285,559.09 × 78,087.39
  4. Step 4: Simplify right side
    190,538.83x = 22,298,562,762.81
  5. Step 5: Solve for x
    x = 22,298,562,762.81/190,538.83
  6. Step 6: Final answer
    x = 117,028.97

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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.