Home / 190,623.96-285,949.26-78,309.84

Finding the Fourth Proportional to 190,623.96, 285,949.26 and 78,309.84

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Solution

The fourth proportional to 190,623.96, 285,949.26 and 78,309.84 is: 117,470.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,623.96 : 285,949.26 = 78,309.84 : x
  2. Step 2: Convert to fraction form
    190,623.96/285,949.26 = 78,309.84/x
  3. Step 3: Cross multiply
    190,623.96x = 285,949.26 × 78,309.84
  4. Step 4: Simplify right side
    190,623.96x = 22,392,640,798.72
  5. Step 5: Solve for x
    x = 22,392,640,798.72/190,623.96
  6. Step 6: Final answer
    x = 117,470.23

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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.