Finding the Fourth Proportional to 121,872,949.08, 168,184,651.48 and 69,663,105.75
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Solution
The fourth proportional to 121,872,949.08, 168,184,651.48 and 69,663,105.75 is: 96,135,075.50
Step by Step Solution
- Step 1: Write the proportion equation
121,872,949.08 : 168,184,651.48 = 69,663,105.75 : x - Step 2: Convert to fraction form
121,872,949.08/168,184,651.48 = 69,663,105.75/x - Step 3: Cross multiply
121,872,949.08x = 168,184,651.48 × 69,663,105.75 - Step 4: Simplify right side
121,872,949.08x = 11,716,265,161,403,976 - Step 5: Solve for x
x = 11,716,265,161,403,976/121,872,949.08 - Step 6: Final answer
x = 96,135,075.50
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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.