Finding the Fourth Proportional to 121,619,577.12, 167,832,942.18 and 65,864,545.68
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Solution
The fourth proportional to 121,619,577.12, 167,832,942.18 and 65,864,545.68 is: 90,891,949.71
Step by Step Solution
- Step 1: Write the proportion equation
121,619,577.12 : 167,832,942.18 = 65,864,545.68 : x - Step 2: Convert to fraction form
121,619,577.12/167,832,942.18 = 65,864,545.68/x - Step 3: Cross multiply
121,619,577.12x = 167,832,942.18 × 65,864,545.68 - Step 4: Simplify right side
121,619,577.12x = 11,054,240,486,823,410 - Step 5: Solve for x
x = 11,054,240,486,823,410/121,619,577.12 - Step 6: Final answer
x = 90,891,949.71
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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.