Home / 115,410.94-159,339.10-74,596.43

Finding the Fourth Proportional to 115,410.94, 159,339.10 and 74,596.43

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Solution

The fourth proportional to 115,410.94, 159,339.10 and 74,596.43 is: 102,989.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,410.94 : 159,339.10 = 74,596.43 : x
  2. Step 2: Convert to fraction form
    115,410.94/159,339.10 = 74,596.43/x
  3. Step 3: Cross multiply
    115,410.94x = 159,339.10 × 74,596.43
  4. Step 4: Simplify right side
    115,410.94x = 11,886,128,019.41
  5. Step 5: Solve for x
    x = 11,886,128,019.41/115,410.94
  6. Step 6: Final answer
    x = 102,989.61

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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.