Finding the Fourth Proportional to 121,747,608.68, 168,013,864.74 and 65,994,855.08
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Solution
The fourth proportional to 121,747,608.68, 168,013,864.74 and 65,994,855.08 is: 91,074,073.45
Step by Step Solution
- Step 1: Write the proportion equation
121,747,608.68 : 168,013,864.74 = 65,994,855.08 : x - Step 2: Convert to fraction form
121,747,608.68/168,013,864.74 = 65,994,855.08/x - Step 3: Cross multiply
121,747,608.68x = 168,013,864.74 × 65,994,855.08 - Step 4: Simplify right side
121,747,608.68x = 11,088,050,654,947,022 - Step 5: Solve for x
x = 11,088,050,654,947,022/121,747,608.68 - Step 6: Final answer
x = 91,074,073.45
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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.