Finding the Fourth Proportional to 124,530.75, 171,852.45 and 79,818.75
Calculator
Solution
The fourth proportional to 124,530.75, 171,852.45 and 79,818.75 is: 110,149.88
Step by Step Solution
- Step 1: Write the proportion equation
124,530.75 : 171,852.45 = 79,818.75 : x - Step 2: Convert to fraction form
124,530.75/171,852.45 = 79,818.75/x - Step 3: Cross multiply
124,530.75x = 171,852.45 × 79,818.75 - Step 4: Simplify right side
124,530.75x = 13,717,047,743.44 - Step 5: Solve for x
x = 13,717,047,743.44/124,530.75 - Step 6: Final answer
x = 110,149.88
Related Problems
Find fourth proportional to 62,265.38, 85,926.23 and 39,909.38
Half scale
Find fourth proportional to 249,061.50, 343,704.90 and 159,637.50
Double scale
Find fourth proportional to 124,531.75, 171,853.83 and 79,819.75
Similar ratio
Find fourth proportional to 186,796.13, 257,778.68 and 119,728.13
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.