Home / 119-178.50-43

Finding the Fourth Proportional to 119, 178.50 and 43

Calculator

Solution

The fourth proportional to 119, 178.50 and 43 is: 64.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    119 : 178.50 = 43 : x
  2. Step 2: Convert to fraction form
    119/178.50 = 43/x
  3. Step 3: Cross multiply
    119x = 178.50 × 43
  4. Step 4: Simplify right side
    119x = 7,675.50
  5. Step 5: Solve for x
    x = 7,675.50/119
  6. Step 6: Final answer
    x = 64.50

Related Problems

Find fourth proportional to 59.50, 89.25 and 21.50
Half scale
Find fourth proportional to 238, 357 and 86
Double scale
Find fourth proportional to 120, 180 and 44
Similar ratio
Find fourth proportional to 178.50, 267.75 and 64.50
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.