Finding the Fourth Proportional to 121,608,102.24, 167,820,363.36 and 72,715,530.24
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Solution
The fourth proportional to 121,608,102.24, 167,820,363.36 and 72,715,530.24 is: 100,348,138.67
Step by Step Solution
- Step 1: Write the proportion equation
121,608,102.24 : 167,820,363.36 = 72,715,530.24 : x - Step 2: Convert to fraction form
121,608,102.24/167,820,363.36 = 72,715,530.24/x - Step 3: Cross multiply
121,608,102.24x = 167,820,363.36 × 72,715,530.24 - Step 4: Simplify right side
121,608,102.24x = 12,203,146,706,791,868 - Step 5: Solve for x
x = 12,203,146,706,791,868/121,608,102.24 - Step 6: Final answer
x = 100,348,138.67
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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.