Home / 118,980-178,470-45,108

Finding the Fourth Proportional to 118,980, 178,470 and 45,108

Calculator

Solution

The fourth proportional to 118,980, 178,470 and 45,108 is: 67,662

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,980 : 178,470 = 45,108 : x
  2. Step 2: Convert to fraction form
    118,980/178,470 = 45,108/x
  3. Step 3: Cross multiply
    118,980x = 178,470 × 45,108
  4. Step 4: Simplify right side
    118,980x = 8,050,424,760
  5. Step 5: Solve for x
    x = 8,050,424,760/118,980
  6. Step 6: Final answer
    x = 67,662

Related Problems

Find fourth proportional to 59,490, 89,235 and 22,554
Half scale
Find fourth proportional to 237,960, 356,940 and 90,216
Double scale
Find fourth proportional to 118,981, 178,471.50 and 45,109
Similar ratio
Find fourth proportional to 178,470, 267,705 and 67,662
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.