Home / 122,100.12-183,112.80-72,166.44

Finding the Fourth Proportional to 122,100.12, 183,112.80 and 72,166.44

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Solution

The fourth proportional to 122,100.12, 183,112.80 and 72,166.44 is: 108,227.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,100.12 : 183,112.80 = 72,166.44 : x
  2. Step 2: Convert to fraction form
    122,100.12/183,112.80 = 72,166.44/x
  3. Step 3: Cross multiply
    122,100.12x = 183,112.80 × 72,166.44
  4. Step 4: Simplify right side
    122,100.12x = 13,214,598,894.43
  5. Step 5: Solve for x
    x = 13,214,598,894.43/122,100.12
  6. Step 6: Final answer
    x = 108,227.57

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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.