Finding the Fourth Proportional to 235,172.70, 352,656.99 and 85,363.20
Calculator
Solution
The fourth proportional to 235,172.70, 352,656.99 and 85,363.20 is: 128,007.75
Step by Step Solution
- Step 1: Write the proportion equation
235,172.70 : 352,656.99 = 85,363.20 : x - Step 2: Convert to fraction form
235,172.70/352,656.99 = 85,363.20/x - Step 3: Cross multiply
235,172.70x = 352,656.99 × 85,363.20 - Step 4: Simplify right side
235,172.70x = 30,103,929,168.77 - Step 5: Solve for x
x = 30,103,929,168.77/235,172.70 - Step 6: Final answer
x = 128,007.75
Related Problems
Find fourth proportional to 117,586.35, 176,328.50 and 42,681.60
Half scale
Find fourth proportional to 470,345.40, 705,313.98 and 170,726.40
Double scale
Find fourth proportional to 235,173.70, 352,658.49 and 85,364.20
Similar ratio
Find fourth proportional to 352,759.05, 528,985.49 and 128,044.80
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.