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Finding the Fourth Proportional to 122,603.70, 183,996.81 and 91,087.14

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Solution

The fourth proportional to 122,603.70, 183,996.81 and 91,087.14 is: 136,698.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,603.70 : 183,996.81 = 91,087.14 : x
  2. Step 2: Convert to fraction form
    122,603.70/183,996.81 = 91,087.14/x
  3. Step 3: Cross multiply
    122,603.70x = 183,996.81 × 91,087.14
  4. Step 4: Simplify right side
    122,603.70x = 16,759,743,192.02
  5. Step 5: Solve for x
    x = 16,759,743,192.02/122,603.70
  6. Step 6: Final answer
    x = 136,698.51

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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.