Home / 190,539.32-285,559.82-78,087.88

Finding the Fourth Proportional to 190,539.32, 285,559.82 and 78,087.88

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Solution

The fourth proportional to 190,539.32, 285,559.82 and 78,087.88 is: 117,029.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,539.32 : 285,559.82 = 78,087.88 : x
  2. Step 2: Convert to fraction form
    190,539.32/285,559.82 = 78,087.88/x
  3. Step 3: Cross multiply
    190,539.32x = 285,559.82 × 78,087.88
  4. Step 4: Simplify right side
    190,539.32x = 22,298,760,956.98
  5. Step 5: Solve for x
    x = 22,298,760,956.98/190,539.32
  6. Step 6: Final answer
    x = 117,029.71

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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.