Home / 68,200-102,300-18,952

Finding the Fourth Proportional to 68,200, 102,300 and 18,952

Calculator

Solution

The fourth proportional to 68,200, 102,300 and 18,952 is: 28,428

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,200 : 102,300 = 18,952 : x
  2. Step 2: Convert to fraction form
    68,200/102,300 = 18,952/x
  3. Step 3: Cross multiply
    68,200x = 102,300 × 18,952
  4. Step 4: Simplify right side
    68,200x = 1,938,789,600
  5. Step 5: Solve for x
    x = 1,938,789,600/68,200
  6. Step 6: Final answer
    x = 28,428

Related Problems

Find fourth proportional to 34,100, 51,150 and 9,476
Half scale
Find fourth proportional to 136,400, 204,600 and 37,904
Double scale
Find fourth proportional to 68,201, 102,301.50 and 18,953
Similar ratio
Find fourth proportional to 102,300, 153,450 and 28,428
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.