Home / 105,619.25-145,754.57-57,874.42

Finding the Fourth Proportional to 105,619.25, 145,754.57 and 57,874.42

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Solution

The fourth proportional to 105,619.25, 145,754.57 and 57,874.42 is: 79,866.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,619.25 : 145,754.57 = 57,874.42 : x
  2. Step 2: Convert to fraction form
    105,619.25/145,754.57 = 57,874.42/x
  3. Step 3: Cross multiply
    105,619.25x = 145,754.57 × 57,874.42
  4. Step 4: Simplify right side
    105,619.25x = 8,435,460,182.95
  5. Step 5: Solve for x
    x = 8,435,460,182.95/105,619.25
  6. Step 6: Final answer
    x = 79,866.69

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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.