Home / 122,719.36-169,299.84-77,361.52

Finding the Fourth Proportional to 122,719.36, 169,299.84 and 77,361.52

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Solution

The fourth proportional to 122,719.36, 169,299.84 and 77,361.52 is: 106,725.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,719.36 : 169,299.84 = 77,361.52 : x
  2. Step 2: Convert to fraction form
    122,719.36/169,299.84 = 77,361.52/x
  3. Step 3: Cross multiply
    122,719.36x = 169,299.84 × 77,361.52
  4. Step 4: Simplify right side
    122,719.36x = 13,097,292,958.16
  5. Step 5: Solve for x
    x = 13,097,292,958.16/122,719.36
  6. Step 6: Final answer
    x = 106,725.56

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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.