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Finding the Fourth Proportional to 190,701.80, 285,966.30 and 72,333.80

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Solution

The fourth proportional to 190,701.80, 285,966.30 and 72,333.80 is: 108,467.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,701.80 : 285,966.30 = 72,333.80 : x
  2. Step 2: Convert to fraction form
    190,701.80/285,966.30 = 72,333.80/x
  3. Step 3: Cross multiply
    190,701.80x = 285,966.30 × 72,333.80
  4. Step 4: Simplify right side
    190,701.80x = 20,685,029,150.94
  5. Step 5: Solve for x
    x = 20,685,029,150.94/190,701.80
  6. Step 6: Final answer
    x = 108,467.93

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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.