Home / 105,391.11-145,437.93-57,643.44

Finding the Fourth Proportional to 105,391.11, 145,437.93 and 57,643.44

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Solution

The fourth proportional to 105,391.11, 145,437.93 and 57,643.44 is: 79,546.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,391.11 : 145,437.93 = 57,643.44 : x
  2. Step 2: Convert to fraction form
    105,391.11/145,437.93 = 57,643.44/x
  3. Step 3: Cross multiply
    105,391.11x = 145,437.93 × 57,643.44
  4. Step 4: Simplify right side
    105,391.11x = 8,383,542,591.68
  5. Step 5: Solve for x
    x = 8,383,542,591.68/105,391.11
  6. Step 6: Final answer
    x = 79,546.96

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1.5x scale

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.