Finding the Fourth Proportional to 121,168,972.80, 181,748,793.60 and 40,389,940.80
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Solution
The fourth proportional to 121,168,972.80, 181,748,793.60 and 40,389,940.80 is: 60,583,355.99
Step by Step Solution
- Step 1: Write the proportion equation
121,168,972.80 : 181,748,793.60 = 40,389,940.80 : x - Step 2: Convert to fraction form
121,168,972.80/181,748,793.60 = 40,389,940.80/x - Step 3: Cross multiply
121,168,972.80x = 181,748,793.60 × 40,389,940.80 - Step 4: Simplify right side
121,168,972.80x = 7,340,823,013,975,418 - Step 5: Solve for x
x = 7,340,823,013,975,418/121,168,972.80 - Step 6: Final answer
x = 60,583,355.99
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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.