Home / 211,981.19-318,004.04-131,954.40

Finding the Fourth Proportional to 211,981.19, 318,004.04 and 131,954.40

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Solution

The fourth proportional to 211,981.19, 318,004.04 and 131,954.40 is: 197,951.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,981.19 : 318,004.04 = 131,954.40 : x
  2. Step 2: Convert to fraction form
    211,981.19/318,004.04 = 131,954.40/x
  3. Step 3: Cross multiply
    211,981.19x = 318,004.04 × 131,954.40
  4. Step 4: Simplify right side
    211,981.19x = 41,962,032,625.66
  5. Step 5: Solve for x
    x = 41,962,032,625.66/211,981.19
  6. Step 6: Final answer
    x = 197,951.68

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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.