Finding the Fourth Proportional to 100,623,840.35, 138,861,369.92 and 57,166,160.99
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Solution
The fourth proportional to 100,623,840.35, 138,861,369.92 and 57,166,160.99 is: 78,889,569.31
Step by Step Solution
- Step 1: Write the proportion equation
100,623,840.35 : 138,861,369.92 = 57,166,160.99 : x - Step 2: Convert to fraction form
100,623,840.35/138,861,369.92 = 57,166,160.99/x - Step 3: Cross multiply
100,623,840.35x = 138,861,369.92 × 57,166,160.99 - Step 4: Simplify right side
100,623,840.35x = 7,938,171,427,587,273 - Step 5: Solve for x
x = 7,938,171,427,587,273/100,623,840.35 - Step 6: Final answer
x = 78,889,569.31
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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.