Finding the Fourth Proportional to 161,682,316.80, 242,558,904.60 and 79,840,402.80
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Solution
The fourth proportional to 161,682,316.80, 242,558,904.60 and 79,840,402.80 is: 119,778,099.60
Step by Step Solution
- Step 1: Write the proportion equation
161,682,316.80 : 242,558,904.60 = 79,840,402.80 : x - Step 2: Convert to fraction form
161,682,316.80/242,558,904.60 = 79,840,402.80/x - Step 3: Cross multiply
161,682,316.80x = 242,558,904.60 × 79,840,402.80 - Step 4: Simplify right side
161,682,316.80x = 19,366,000,645,990,772 - Step 5: Solve for x
x = 19,366,000,645,990,772/161,682,316.80 - Step 6: Final answer
x = 119,778,099.60
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.