Finding the Fourth Proportional to 121,638,725.34, 167,865,636.51 and 66,634,586.70
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Solution
The fourth proportional to 121,638,725.34, 167,865,636.51 and 66,634,586.70 is: 91,958,027.99
Step by Step Solution
- Step 1: Write the proportion equation
121,638,725.34 : 167,865,636.51 = 66,634,586.70 : x - Step 2: Convert to fraction form
121,638,725.34/167,865,636.51 = 66,634,586.70/x - Step 3: Cross multiply
121,638,725.34x = 167,865,636.51 × 66,634,586.70 - Step 4: Simplify right side
121,638,725.34x = 11,185,657,309,976,280 - Step 5: Solve for x
x = 11,185,657,309,976,280/121,638,725.34 - Step 6: Final answer
x = 91,958,027.99
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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.