Finding the Fourth Proportional to 102,854.62, 141,985.56 and 60,415.84
Calculator
Solution
The fourth proportional to 102,854.62, 141,985.56 and 60,415.84 is: 83,400.99
Step by Step Solution
- Step 1: Write the proportion equation
102,854.62 : 141,985.56 = 60,415.84 : x - Step 2: Convert to fraction form
102,854.62/141,985.56 = 60,415.84/x - Step 3: Cross multiply
102,854.62x = 141,985.56 × 60,415.84 - Step 4: Simplify right side
102,854.62x = 8,578,176,875.27 - Step 5: Solve for x
x = 8,578,176,875.27/102,854.62 - Step 6: Final answer
x = 83,400.99
Related Problems
Find fourth proportional to 51,427.31, 70,992.78 and 30,207.92
Half scale
Find fourth proportional to 205,709.24, 283,971.12 and 120,831.68
Double scale
Find fourth proportional to 102,855.62, 141,986.94 and 60,416.84
Similar ratio
Find fourth proportional to 154,281.93, 212,978.34 and 90,623.76
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.