Home / 190,395.90-285,556.89-72,076.50

Finding the Fourth Proportional to 190,395.90, 285,556.89 and 72,076.50

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Solution

The fourth proportional to 190,395.90, 285,556.89 and 72,076.50 is: 108,100.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,395.90 : 285,556.89 = 72,076.50 : x
  2. Step 2: Convert to fraction form
    190,395.90/285,556.89 = 72,076.50/x
  3. Step 3: Cross multiply
    190,395.90x = 285,556.89 × 72,076.50
  4. Step 4: Simplify right side
    190,395.90x = 20,581,941,182.09
  5. Step 5: Solve for x
    x = 20,581,941,182.09/190,395.90
  6. Step 6: Final answer
    x = 108,100.76

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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.