Home / 137,086.72-205,647-66,913

Finding the Fourth Proportional to 137,086.72, 205,647 and 66,913

Calculator

Solution

The fourth proportional to 137,086.72, 205,647 and 66,913 is: 100,377.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,086.72 : 205,647 = 66,913 : x
  2. Step 2: Convert to fraction form
    137,086.72/205,647 = 66,913/x
  3. Step 3: Cross multiply
    137,086.72x = 205,647 × 66,913
  4. Step 4: Simplify right side
    137,086.72x = 13,760,457,711
  5. Step 5: Solve for x
    x = 13,760,457,711/137,086.72
  6. Step 6: Final answer
    x = 100,377.76

Related Problems

Find fourth proportional to 68,543.36, 102,823.50 and 33,456.50
Half scale
Find fourth proportional to 274,173.44, 411,294 and 133,826
Double scale
Find fourth proportional to 137,087.72, 205,648.50 and 66,914
Similar ratio
Find fourth proportional to 205,630.08, 308,470.50 and 100,369.50
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.