Home / 129,710-194,565-31,214

Finding the Fourth Proportional to 129,710, 194,565 and 31,214

Calculator

Solution

The fourth proportional to 129,710, 194,565 and 31,214 is: 46,821

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,710 : 194,565 = 31,214 : x
  2. Step 2: Convert to fraction form
    129,710/194,565 = 31,214/x
  3. Step 3: Cross multiply
    129,710x = 194,565 × 31,214
  4. Step 4: Simplify right side
    129,710x = 6,073,151,910
  5. Step 5: Solve for x
    x = 6,073,151,910/129,710
  6. Step 6: Final answer
    x = 46,821

Related Problems

Find fourth proportional to 64,855, 97,282.50 and 15,607
Half scale
Find fourth proportional to 259,420, 389,130 and 62,428
Double scale
Find fourth proportional to 129,711, 194,566.50 and 31,215
Similar ratio
Find fourth proportional to 194,565, 291,847.50 and 46,821
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.