Finding the Fourth Proportional to 157,629,939.84, 217,528,018.14 and 86,102,880.48
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Solution
The fourth proportional to 157,629,939.84, 217,528,018.14 and 86,102,880.48 is: 118,821,265.59
Step by Step Solution
- Step 1: Write the proportion equation
157,629,939.84 : 217,528,018.14 = 86,102,880.48 : x - Step 2: Convert to fraction form
157,629,939.84/217,528,018.14 = 86,102,880.48/x - Step 3: Cross multiply
157,629,939.84x = 217,528,018.14 × 86,102,880.48 - Step 4: Simplify right side
157,629,939.84x = 18,729,788,946,959,692 - Step 5: Solve for x
x = 18,729,788,946,959,692/157,629,939.84 - Step 6: Final answer
x = 118,821,265.59
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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.