Home / 105,517.80-145,616.30-57,770.36

Finding the Fourth Proportional to 105,517.80, 145,616.30 and 57,770.36

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Solution

The fourth proportional to 105,517.80, 145,616.30 and 57,770.36 is: 79,724.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,517.80 : 145,616.30 = 57,770.36 : x
  2. Step 2: Convert to fraction form
    105,517.80/145,616.30 = 57,770.36/x
  3. Step 3: Cross multiply
    105,517.80x = 145,616.30 × 57,770.36
  4. Step 4: Simplify right side
    105,517.80x = 8,412,306,072.87
  5. Step 5: Solve for x
    x = 8,412,306,072.87/105,517.80
  6. Step 6: Final answer
    x = 79,724.05

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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.