Finding the Fourth Proportional to 121,789,243.20, 182,683,864.80 and 57,219,161.70
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Solution
The fourth proportional to 121,789,243.20, 182,683,864.80 and 57,219,161.70 is: 85,828,742.55
Step by Step Solution
- Step 1: Write the proportion equation
121,789,243.20 : 182,683,864.80 = 57,219,161.70 : x - Step 2: Convert to fraction form
121,789,243.20/182,683,864.80 = 57,219,161.70/x - Step 3: Cross multiply
121,789,243.20x = 182,683,864.80 × 57,219,161.70 - Step 4: Simplify right side
121,789,243.20x = 10,453,017,599,972,140 - Step 5: Solve for x
x = 10,453,017,599,972,140/121,789,243.20 - Step 6: Final answer
x = 85,828,742.55
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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.