Home / 208,384.11-312,651.09-81,954.25

Finding the Fourth Proportional to 208,384.11, 312,651.09 and 81,954.25

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Solution

The fourth proportional to 208,384.11, 312,651.09 and 81,954.25 is: 122,960.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,384.11 : 312,651.09 = 81,954.25 : x
  2. Step 2: Convert to fraction form
    208,384.11/312,651.09 = 81,954.25/x
  3. Step 3: Cross multiply
    208,384.11x = 312,651.09 × 81,954.25
  4. Step 4: Simplify right side
    208,384.11x = 25,623,084,811.00
  5. Step 5: Solve for x
    x = 25,623,084,811.00/208,384.11
  6. Step 6: Final answer
    x = 122,960.84

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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.