Home / 68,106-102,159-18,858

Finding the Fourth Proportional to 68,106, 102,159 and 18,858

Calculator

Solution

The fourth proportional to 68,106, 102,159 and 18,858 is: 28,287

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,106 : 102,159 = 18,858 : x
  2. Step 2: Convert to fraction form
    68,106/102,159 = 18,858/x
  3. Step 3: Cross multiply
    68,106x = 102,159 × 18,858
  4. Step 4: Simplify right side
    68,106x = 1,926,514,422
  5. Step 5: Solve for x
    x = 1,926,514,422/68,106
  6. Step 6: Final answer
    x = 28,287

Related Problems

Find fourth proportional to 34,053, 51,079.50 and 9,429
Half scale
Find fourth proportional to 136,212, 204,318 and 37,716
Double scale
Find fourth proportional to 68,107, 102,160.50 and 18,859
Similar ratio
Find fourth proportional to 102,159, 153,238.50 and 28,287
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.