Home / 216,975.88-299,423.37-121,486

Finding the Fourth Proportional to 216,975.88, 299,423.37 and 121,486

Calculator

Solution

The fourth proportional to 216,975.88, 299,423.37 and 121,486 is: 167,648.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,975.88 : 299,423.37 = 121,486 : x
  2. Step 2: Convert to fraction form
    216,975.88/299,423.37 = 121,486/x
  3. Step 3: Cross multiply
    216,975.88x = 299,423.37 × 121,486
  4. Step 4: Simplify right side
    216,975.88x = 36,375,747,527.82
  5. Step 5: Solve for x
    x = 36,375,747,527.82/216,975.88
  6. Step 6: Final answer
    x = 167,648.81

Related Problems

Find fourth proportional to 108,487.94, 149,711.69 and 60,743
Half scale
Find fourth proportional to 433,951.76, 598,846.74 and 242,972
Double scale
Find fourth proportional to 216,976.88, 299,424.75 and 121,487
Similar ratio
Find fourth proportional to 325,463.82, 449,135.06 and 182,229
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.