Home / 137,700-190,026-78,084

Finding the Fourth Proportional to 137,700, 190,026 and 78,084

Calculator

Solution

The fourth proportional to 137,700, 190,026 and 78,084 is: 107,755.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,700 : 190,026 = 78,084 : x
  2. Step 2: Convert to fraction form
    137,700/190,026 = 78,084/x
  3. Step 3: Cross multiply
    137,700x = 190,026 × 78,084
  4. Step 4: Simplify right side
    137,700x = 14,837,990,184
  5. Step 5: Solve for x
    x = 14,837,990,184/137,700
  6. Step 6: Final answer
    x = 107,755.92

Related Problems

Find fourth proportional to 68,850, 95,013 and 39,042
Half scale
Find fourth proportional to 275,400, 380,052 and 156,168
Double scale
Find fourth proportional to 137,701, 190,027.38 and 78,085
Similar ratio
Find fourth proportional to 206,550, 285,039 and 117,126
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.