Home / 175.40-242.10-105.50

Finding the Fourth Proportional to 175.40, 242.10 and 105.50

Calculator

Solution

The fourth proportional to 175.40, 242.10 and 105.50 is: 145.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    175.40 : 242.10 = 105.50 : x
  2. Step 2: Convert to fraction form
    175.40/242.10 = 105.50/x
  3. Step 3: Cross multiply
    175.40x = 242.10 × 105.50
  4. Step 4: Simplify right side
    175.40x = 25,541.55
  5. Step 5: Solve for x
    x = 25,541.55/175.40
  6. Step 6: Final answer
    x = 145.62

Related Problems

Find fourth proportional to 87.70, 121.05 and 52.75
Half scale
Find fourth proportional to 350.80, 484.20 and 211
Double scale
Find fourth proportional to 176.40, 243.48 and 106.50
Similar ratio
Find fourth proportional to 263.10, 363.15 and 158.25
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.