Home / 122,135.31-168,546.77-74,388.70

Finding the Fourth Proportional to 122,135.31, 168,546.77 and 74,388.70

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Solution

The fourth proportional to 122,135.31, 168,546.77 and 74,388.70 is: 102,656.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,135.31 : 168,546.77 = 74,388.70 : x
  2. Step 2: Convert to fraction form
    122,135.31/168,546.77 = 74,388.70/x
  3. Step 3: Cross multiply
    122,135.31x = 168,546.77 × 74,388.70
  4. Step 4: Simplify right side
    122,135.31x = 12,537,974,697.56
  5. Step 5: Solve for x
    x = 12,537,974,697.56/122,135.31
  6. Step 6: Final answer
    x = 102,656.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.