Home / 78,180-117,270-34,404

Finding the Fourth Proportional to 78,180, 117,270 and 34,404

Calculator

Solution

The fourth proportional to 78,180, 117,270 and 34,404 is: 51,606

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,180 : 117,270 = 34,404 : x
  2. Step 2: Convert to fraction form
    78,180/117,270 = 34,404/x
  3. Step 3: Cross multiply
    78,180x = 117,270 × 34,404
  4. Step 4: Simplify right side
    78,180x = 4,034,557,080
  5. Step 5: Solve for x
    x = 4,034,557,080/78,180
  6. Step 6: Final answer
    x = 51,606

Related Problems

Find fourth proportional to 39,090, 58,635 and 17,202
Half scale
Find fourth proportional to 156,360, 234,540 and 68,808
Double scale
Find fourth proportional to 78,181, 117,271.50 and 34,405
Similar ratio
Find fourth proportional to 117,270, 175,905 and 51,606
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.