Home / 190,485.12-285,749.76-72,244.80

Finding the Fourth Proportional to 190,485.12, 285,749.76 and 72,244.80

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Solution

The fourth proportional to 190,485.12, 285,749.76 and 72,244.80 is: 108,375.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,485.12 : 285,749.76 = 72,244.80 : x
  2. Step 2: Convert to fraction form
    190,485.12/285,749.76 = 72,244.80/x
  3. Step 3: Cross multiply
    190,485.12x = 285,749.76 × 72,244.80
  4. Step 4: Simplify right side
    190,485.12x = 20,643,934,261.25
  5. Step 5: Solve for x
    x = 20,643,934,261.25/190,485.12
  6. Step 6: Final answer
    x = 108,375.57

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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.