Finding the Fourth Proportional to 153,701.61, 212,107.79 and 85,718.66
Calculator
Solution
The fourth proportional to 153,701.61, 212,107.79 and 85,718.66 is: 118,291.50
Step by Step Solution
- Step 1: Write the proportion equation
153,701.61 : 212,107.79 = 85,718.66 : x - Step 2: Convert to fraction form
153,701.61/212,107.79 = 85,718.66/x - Step 3: Cross multiply
153,701.61x = 212,107.79 × 85,718.66 - Step 4: Simplify right side
153,701.61x = 18,181,594,045.23 - Step 5: Solve for x
x = 18,181,594,045.23/153,701.61 - Step 6: Final answer
x = 118,291.50
Related Problems
Find fourth proportional to 76,850.81, 106,053.89 and 42,859.33
Half scale
Find fourth proportional to 307,403.22, 424,215.57 and 171,437.31
Double scale
Find fourth proportional to 153,702.61, 212,109.16 and 85,719.66
Similar ratio
Find fourth proportional to 230,552.42, 318,161.68 and 128,577.98
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.