Finding the Fourth Proportional to 187,669.08, 258,986.70 and 102,780.68
Calculator
Solution
The fourth proportional to 187,669.08, 258,986.70 and 102,780.68 is: 141,839.18
Step by Step Solution
- Step 1: Write the proportion equation
187,669.08 : 258,986.70 = 102,780.68 : x - Step 2: Convert to fraction form
187,669.08/258,986.70 = 102,780.68/x - Step 3: Cross multiply
187,669.08x = 258,986.70 × 102,780.68 - Step 4: Simplify right side
187,669.08x = 26,618,829,136.96 - Step 5: Solve for x
x = 26,618,829,136.96/187,669.08 - Step 6: Final answer
x = 141,839.18
Related Problems
Find fourth proportional to 93,834.54, 129,493.35 and 51,390.34
Half scale
Find fourth proportional to 375,338.16, 517,973.40 and 205,561.36
Double scale
Find fourth proportional to 187,670.08, 258,988.08 and 102,781.68
Similar ratio
Find fourth proportional to 281,503.62, 388,480.05 and 154,171.02
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.