Finding the Fourth Proportional to 104,287.21, 143,915.48 and 58,974.09
Calculator
Solution
The fourth proportional to 104,287.21, 143,915.48 and 58,974.09 is: 81,383.75
Step by Step Solution
- Step 1: Write the proportion equation
104,287.21 : 143,915.48 = 58,974.09 : x - Step 2: Convert to fraction form
104,287.21/143,915.48 = 58,974.09/x - Step 3: Cross multiply
104,287.21x = 143,915.48 × 58,974.09 - Step 4: Simplify right side
104,287.21x = 8,487,283,455.47 - Step 5: Solve for x
x = 8,487,283,455.47/104,287.21 - Step 6: Final answer
x = 81,383.75
Related Problems
Find fourth proportional to 52,143.60, 71,957.74 and 29,487.04
Half scale
Find fourth proportional to 208,574.41, 287,830.95 and 117,948.17
Double scale
Find fourth proportional to 104,288.21, 143,916.85 and 58,975.09
Similar ratio
Find fourth proportional to 156,430.81, 215,873.21 and 88,461.13
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.