Home / 105,257.10-145,264.66-57,517.54

Finding the Fourth Proportional to 105,257.10, 145,264.66 and 57,517.54

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Solution

The fourth proportional to 105,257.10, 145,264.66 and 57,517.54 is: 79,379.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,257.10 : 145,264.66 = 57,517.54 : x
  2. Step 2: Convert to fraction form
    105,257.10/145,264.66 = 57,517.54/x
  3. Step 3: Cross multiply
    105,257.10x = 145,264.66 × 57,517.54
  4. Step 4: Simplify right side
    105,257.10x = 8,355,265,892.14
  5. Step 5: Solve for x
    x = 8,355,265,892.14/105,257.10
  6. Step 6: Final answer
    x = 79,379.59

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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.