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Finding the Fourth Proportional to 122,395.58, 183,236.74 and 90,945.06

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Solution

The fourth proportional to 122,395.58, 183,236.74 and 90,945.06 is: 136,152.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,395.58 : 183,236.74 = 90,945.06 : x
  2. Step 2: Convert to fraction form
    122,395.58/183,236.74 = 90,945.06/x
  3. Step 3: Cross multiply
    122,395.58x = 183,236.74 × 90,945.06
  4. Step 4: Simplify right side
    122,395.58x = 16,664,476,313.50
  5. Step 5: Solve for x
    x = 16,664,476,313.50/122,395.58
  6. Step 6: Final answer
    x = 136,152.60

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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.