Home / 155,105.64-232,484-78,990.64

Finding the Fourth Proportional to 155,105.64, 232,484 and 78,990.64

Calculator

Solution

The fourth proportional to 155,105.64, 232,484 and 78,990.64 is: 118,397.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,105.64 : 232,484 = 78,990.64 : x
  2. Step 2: Convert to fraction form
    155,105.64/232,484 = 78,990.64/x
  3. Step 3: Cross multiply
    155,105.64x = 232,484 × 78,990.64
  4. Step 4: Simplify right side
    155,105.64x = 18,364,059,949.76
  5. Step 5: Solve for x
    x = 18,364,059,949.76/155,105.64
  6. Step 6: Final answer
    x = 118,397.11

Related Problems

Find fourth proportional to 77,552.82, 116,242 and 39,495.32
Half scale
Find fourth proportional to 310,211.28, 464,968 and 157,981.28
Double scale
Find fourth proportional to 155,106.64, 232,485.50 and 78,991.64
Similar ratio
Find fourth proportional to 232,658.46, 348,726 and 118,485.96
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.