Home / 105,111.22-145,056.60-57,367.66

Finding the Fourth Proportional to 105,111.22, 145,056.60 and 57,367.66

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Solution

The fourth proportional to 105,111.22, 145,056.60 and 57,367.66 is: 79,169.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,111.22 : 145,056.60 = 57,367.66 : x
  2. Step 2: Convert to fraction form
    105,111.22/145,056.60 = 57,367.66/x
  3. Step 3: Cross multiply
    105,111.22x = 145,056.60 × 57,367.66
  4. Step 4: Simplify right side
    105,111.22x = 8,321,557,709.56
  5. Step 5: Solve for x
    x = 8,321,557,709.56/105,111.22
  6. Step 6: Final answer
    x = 79,169.07

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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.