Home / 130,512-195,768-56,640

Finding the Fourth Proportional to 130,512, 195,768 and 56,640

Calculator

Solution

The fourth proportional to 130,512, 195,768 and 56,640 is: 84,960

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,512 : 195,768 = 56,640 : x
  2. Step 2: Convert to fraction form
    130,512/195,768 = 56,640/x
  3. Step 3: Cross multiply
    130,512x = 195,768 × 56,640
  4. Step 4: Simplify right side
    130,512x = 11,088,299,520
  5. Step 5: Solve for x
    x = 11,088,299,520/130,512
  6. Step 6: Final answer
    x = 84,960

Related Problems

Find fourth proportional to 65,256, 97,884 and 28,320
Half scale
Find fourth proportional to 261,024, 391,536 and 113,280
Double scale
Find fourth proportional to 130,513, 195,769.50 and 56,641
Similar ratio
Find fourth proportional to 195,768, 293,652 and 84,960
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.