Finding the Fourth Proportional to 121,110.80, 167,130.44 and 75,813.77
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Solution
The fourth proportional to 121,110.80, 167,130.44 and 75,813.77 is: 104,621.45
Step by Step Solution
- Step 1: Write the proportion equation
121,110.80 : 167,130.44 = 75,813.77 : x - Step 2: Convert to fraction form
121,110.80/167,130.44 = 75,813.77/x - Step 3: Cross multiply
121,110.80x = 167,130.44 × 75,813.77 - Step 4: Simplify right side
121,110.80x = 12,670,787,523.44 - Step 5: Solve for x
x = 12,670,787,523.44/121,110.80 - Step 6: Final answer
x = 104,621.45
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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.