Finding the Fourth Proportional to 118,436,841.05, 163,430,257.77 and 65,505,137.49
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Solution
The fourth proportional to 118,436,841.05, 163,430,257.77 and 65,505,137.49 is: 90,390,130.39
Step by Step Solution
- Step 1: Write the proportion equation
118,436,841.05 : 163,430,257.77 = 65,505,137.49 : x - Step 2: Convert to fraction form
118,436,841.05/163,430,257.77 = 65,505,137.49/x - Step 3: Cross multiply
118,436,841.05x = 163,430,257.77 × 65,505,137.49 - Step 4: Simplify right side
118,436,841.05x = 10,705,521,505,249,992 - Step 5: Solve for x
x = 10,705,521,505,249,992/118,436,841.05 - Step 6: Final answer
x = 90,390,130.39
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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.