Home / 122,278.19-168,757.94-81,440.06

Finding the Fourth Proportional to 122,278.19, 168,757.94 and 81,440.06

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Solution

The fourth proportional to 122,278.19, 168,757.94 and 81,440.06 is: 112,396.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,278.19 : 168,757.94 = 81,440.06 : x
  2. Step 2: Convert to fraction form
    122,278.19/168,757.94 = 81,440.06/x
  3. Step 3: Cross multiply
    122,278.19x = 168,757.94 × 81,440.06
  4. Step 4: Simplify right side
    122,278.19x = 13,743,656,118.89
  5. Step 5: Solve for x
    x = 13,743,656,118.89/122,278.19
  6. Step 6: Final answer
    x = 112,396.63

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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.