Finding the Fourth Proportional to 118,209,821.56, 163,184,843.84 and 68,640,539.92
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Solution
The fourth proportional to 118,209,821.56, 163,184,843.84 and 68,640,539.92 is: 94,756,050.22
Step by Step Solution
- Step 1: Write the proportion equation
118,209,821.56 : 163,184,843.84 = 68,640,539.92 : x - Step 2: Convert to fraction form
118,209,821.56/163,184,843.84 = 68,640,539.92/x - Step 3: Cross multiply
118,209,821.56x = 163,184,843.84 × 68,640,539.92 - Step 4: Simplify right side
118,209,821.56x = 11,201,095,787,938,486 - Step 5: Solve for x
x = 11,201,095,787,938,486/118,209,821.56 - Step 6: Final answer
x = 94,756,050.22
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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.