Home / 70,144.36-105,234.63-20,228.38

Finding the Fourth Proportional to 70,144.36, 105,234.63 and 20,228.38

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Solution

The fourth proportional to 70,144.36, 105,234.63 and 20,228.38 is: 30,347.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,144.36 : 105,234.63 = 20,228.38 : x
  2. Step 2: Convert to fraction form
    70,144.36/105,234.63 = 20,228.38/x
  3. Step 3: Cross multiply
    70,144.36x = 105,234.63 × 20,228.38
  4. Step 4: Simplify right side
    70,144.36x = 2,128,726,084.80
  5. Step 5: Solve for x
    x = 2,128,726,084.80/70,144.36
  6. Step 6: Final answer
    x = 30,347.79

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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.