Finding the Fourth Proportional to 165,855.12, 228,880.08 and 90,403.68
Calculator
Solution
The fourth proportional to 165,855.12, 228,880.08 and 90,403.68 is: 124,757.09
Step by Step Solution
- Step 1: Write the proportion equation
165,855.12 : 228,880.08 = 90,403.68 : x - Step 2: Convert to fraction form
165,855.12/228,880.08 = 90,403.68/x - Step 3: Cross multiply
165,855.12x = 228,880.08 × 90,403.68 - Step 4: Simplify right side
165,855.12x = 20,691,601,510.69 - Step 5: Solve for x
x = 20,691,601,510.69/165,855.12 - Step 6: Final answer
x = 124,757.09
Related Problems
Find fourth proportional to 82,927.56, 114,440.04 and 45,201.84
Half scale
Find fourth proportional to 331,710.24, 457,760.16 and 180,807.36
Double scale
Find fourth proportional to 165,856.12, 228,881.46 and 90,404.68
Similar ratio
Find fourth proportional to 248,782.68, 343,320.12 and 135,605.52
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.