Home / 105,515.55-145,605.92-57,759.75

Finding the Fourth Proportional to 105,515.55, 145,605.92 and 57,759.75

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Solution

The fourth proportional to 105,515.55, 145,605.92 and 57,759.75 is: 79,705.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,515.55 : 145,605.92 = 57,759.75 : x
  2. Step 2: Convert to fraction form
    105,515.55/145,605.92 = 57,759.75/x
  3. Step 3: Cross multiply
    105,515.55x = 145,605.92 × 57,759.75
  4. Step 4: Simplify right side
    105,515.55x = 8,410,160,809.69
  5. Step 5: Solve for x
    x = 8,410,160,809.69/105,515.55
  6. Step 6: Final answer
    x = 79,705.42

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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.