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Finding the Fourth Proportional to 190,671.83, 285,895.59 and 72,351.49

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Solution

The fourth proportional to 190,671.83, 285,895.59 and 72,351.49 is: 108,484.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,671.83 : 285,895.59 = 72,351.49 : x
  2. Step 2: Convert to fraction form
    190,671.83/285,895.59 = 72,351.49/x
  3. Step 3: Cross multiply
    190,671.83x = 285,895.59 × 72,351.49
  4. Step 4: Simplify right side
    190,671.83x = 20,684,971,920.93
  5. Step 5: Solve for x
    x = 20,684,971,920.93/190,671.83
  6. Step 6: Final answer
    x = 108,484.68

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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.