Finding the Fourth Proportional to 154,085,617.97, 212,638,134.45 and 84,471,490.70
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Solution
The fourth proportional to 154,085,617.97, 212,638,134.45 and 84,471,490.70 is: 116,570,647.10
Step by Step Solution
- Step 1: Write the proportion equation
154,085,617.97 : 212,638,134.45 = 84,471,490.70 : x - Step 2: Convert to fraction form
154,085,617.97/212,638,134.45 = 84,471,490.70/x - Step 3: Cross multiply
154,085,617.97x = 212,638,134.45 × 84,471,490.70 - Step 4: Simplify right side
154,085,617.97x = 17,961,860,195,595,332 - Step 5: Solve for x
x = 17,961,860,195,595,332/154,085,617.97 - Step 6: Final answer
x = 116,570,647.10
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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.