Home / 161-241.50-47

Finding the Fourth Proportional to 161, 241.50 and 47

Calculator

Solution

The fourth proportional to 161, 241.50 and 47 is: 70.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    161 : 241.50 = 47 : x
  2. Step 2: Convert to fraction form
    161/241.50 = 47/x
  3. Step 3: Cross multiply
    161x = 241.50 × 47
  4. Step 4: Simplify right side
    161x = 11,350.50
  5. Step 5: Solve for x
    x = 11,350.50/161
  6. Step 6: Final answer
    x = 70.50

Related Problems

Find fourth proportional to 80.50, 120.75 and 23.50
Half scale
Find fourth proportional to 322, 483 and 94
Double scale
Find fourth proportional to 162, 243 and 48
Similar ratio
Find fourth proportional to 241.50, 362.25 and 70.50
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.