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Finding the Fourth Proportional to 190,671.53, 285,895.16 and 72,351.19

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Solution

The fourth proportional to 190,671.53, 285,895.16 and 72,351.19 is: 108,484.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,671.53 : 285,895.16 = 72,351.19 : x
  2. Step 2: Convert to fraction form
    190,671.53/285,895.16 = 72,351.19/x
  3. Step 3: Cross multiply
    190,671.53x = 285,895.16 × 72,351.19
  4. Step 4: Simplify right side
    190,671.53x = 20,684,853,964.75
  5. Step 5: Solve for x
    x = 20,684,853,964.75/190,671.53
  6. Step 6: Final answer
    x = 108,484.23

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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.