Home / 70,118.26-105,178.30-20,199.18

Finding the Fourth Proportional to 70,118.26, 105,178.30 and 20,199.18

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Solution

The fourth proportional to 70,118.26, 105,178.30 and 20,199.18 is: 30,299.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,118.26 : 105,178.30 = 20,199.18 : x
  2. Step 2: Convert to fraction form
    70,118.26/105,178.30 = 20,199.18/x
  3. Step 3: Cross multiply
    70,118.26x = 105,178.30 × 20,199.18
  4. Step 4: Simplify right side
    70,118.26x = 2,124,515,413.79
  5. Step 5: Solve for x
    x = 2,124,515,413.79/70,118.26
  6. Step 6: Final answer
    x = 30,299.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.