Finding the Fourth Proportional to 115,916,420.80, 159,966,220.44 and 62,994,178.96
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Solution
The fourth proportional to 115,916,420.80, 159,966,220.44 and 62,994,178.96 is: 86,932,814.60
Step by Step Solution
- Step 1: Write the proportion equation
115,916,420.80 : 159,966,220.44 = 62,994,178.96 : x - Step 2: Convert to fraction form
115,916,420.80/159,966,220.44 = 62,994,178.96/x - Step 3: Cross multiply
115,916,420.80x = 159,966,220.44 × 62,994,178.96 - Step 4: Simplify right side
115,916,420.80x = 10,076,940,718,155,990 - Step 5: Solve for x
x = 10,076,940,718,155,990/115,916,420.80 - Step 6: Final answer
x = 86,932,814.60
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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.