Home / 115,414.09-159,343.47-74,599.61

Finding the Fourth Proportional to 115,414.09, 159,343.47 and 74,599.61

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Solution

The fourth proportional to 115,414.09, 159,343.47 and 74,599.61 is: 102,994.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,414.09 : 159,343.47 = 74,599.61 : x
  2. Step 2: Convert to fraction form
    115,414.09/159,343.47 = 74,599.61/x
  3. Step 3: Cross multiply
    115,414.09x = 159,343.47 × 74,599.61
  4. Step 4: Simplify right side
    115,414.09x = 11,886,959,921.33
  5. Step 5: Solve for x
    x = 11,886,959,921.33/115,414.09
  6. Step 6: Final answer
    x = 102,994.01

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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.