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Finding the Fourth Proportional to 190,604.68, 285,797.62 and 72,200.50

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Solution

The fourth proportional to 190,604.68, 285,797.62 and 72,200.50 is: 108,259.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,604.68 : 285,797.62 = 72,200.50 : x
  2. Step 2: Convert to fraction form
    190,604.68/285,797.62 = 72,200.50/x
  3. Step 3: Cross multiply
    190,604.68x = 285,797.62 × 72,200.50
  4. Step 4: Simplify right side
    190,604.68x = 20,634,731,062.81
  5. Step 5: Solve for x
    x = 20,634,731,062.81/190,604.68
  6. Step 6: Final answer
    x = 108,259.31

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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.