Home / 105,119.10-145,062.31-57,372.79

Finding the Fourth Proportional to 105,119.10, 145,062.31 and 57,372.79

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Solution

The fourth proportional to 105,119.10, 145,062.31 and 57,372.79 is: 79,173.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,119.10 : 145,062.31 = 57,372.79 : x
  2. Step 2: Convert to fraction form
    105,119.10/145,062.31 = 57,372.79/x
  3. Step 3: Cross multiply
    105,119.10x = 145,062.31 × 57,372.79
  4. Step 4: Simplify right side
    105,119.10x = 8,322,629,691.96
  5. Step 5: Solve for x
    x = 8,322,629,691.96/105,119.10
  6. Step 6: Final answer
    x = 79,173.33

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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.