Home / 138,427-207,675.18-39,931

Finding the Fourth Proportional to 138,427, 207,675.18 and 39,931

Calculator

Solution

The fourth proportional to 138,427, 207,675.18 and 39,931 is: 59,906.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,427 : 207,675.18 = 39,931 : x
  2. Step 2: Convert to fraction form
    138,427/207,675.18 = 39,931/x
  3. Step 3: Cross multiply
    138,427x = 207,675.18 × 39,931
  4. Step 4: Simplify right side
    138,427x = 8,292,677,612.58
  5. Step 5: Solve for x
    x = 8,292,677,612.58/138,427
  6. Step 6: Final answer
    x = 59,906.50

Related Problems

Find fourth proportional to 69,213.50, 103,837.59 and 19,965.50
Half scale
Find fourth proportional to 276,854, 415,350.36 and 79,862
Double scale
Find fourth proportional to 138,428, 207,676.68 and 39,932
Similar ratio
Find fourth proportional to 207,640.50, 311,512.77 and 59,896.50
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.