Finding the Fourth Proportional to 125,929.80, 173,780.97 and 72,211.68
Calculator
Solution
The fourth proportional to 125,929.80, 173,780.97 and 72,211.68 is: 99,650.88
Step by Step Solution
- Step 1: Write the proportion equation
125,929.80 : 173,780.97 = 72,211.68 : x - Step 2: Convert to fraction form
125,929.80/173,780.97 = 72,211.68/x - Step 3: Cross multiply
125,929.80x = 173,780.97 × 72,211.68 - Step 4: Simplify right side
125,929.80x = 12,549,015,795.73 - Step 5: Solve for x
x = 12,549,015,795.73/125,929.80 - Step 6: Final answer
x = 99,650.88
Related Problems
Find fourth proportional to 62,964.90, 86,890.49 and 36,105.84
Half scale
Find fourth proportional to 251,859.60, 347,561.94 and 144,423.36
Double scale
Find fourth proportional to 125,930.80, 173,782.35 and 72,212.68
Similar ratio
Find fourth proportional to 188,894.70, 260,671.46 and 108,317.52
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.