Home / 190,534.87-285,820.53-72,174.43

Finding the Fourth Proportional to 190,534.87, 285,820.53 and 72,174.43

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Solution

The fourth proportional to 190,534.87, 285,820.53 and 72,174.43 is: 108,268.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,534.87 : 285,820.53 = 72,174.43 : x
  2. Step 2: Convert to fraction form
    190,534.87/285,820.53 = 72,174.43/x
  3. Step 3: Cross multiply
    190,534.87x = 285,820.53 × 72,174.43
  4. Step 4: Simplify right side
    190,534.87x = 20,628,933,835.05
  5. Step 5: Solve for x
    x = 20,628,933,835.05/190,534.87
  6. Step 6: Final answer
    x = 108,268.55

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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.