Home / 147-220.50-49.50

Finding the Fourth Proportional to 147, 220.50 and 49.50

Calculator

Solution

The fourth proportional to 147, 220.50 and 49.50 is: 74.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    147 : 220.50 = 49.50 : x
  2. Step 2: Convert to fraction form
    147/220.50 = 49.50/x
  3. Step 3: Cross multiply
    147x = 220.50 × 49.50
  4. Step 4: Simplify right side
    147x = 10,914.75
  5. Step 5: Solve for x
    x = 10,914.75/147
  6. Step 6: Final answer
    x = 74.25

Related Problems

Find fourth proportional to 73.50, 110.25 and 24.75
Half scale
Find fourth proportional to 294, 441 and 99
Double scale
Find fourth proportional to 148, 222 and 50.50
Similar ratio
Find fourth proportional to 220.50, 330.75 and 74.25
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.