Finding the Fourth Proportional to 138,135,493.67, 190,625,812.09 and 76,254,503.63
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Solution
The fourth proportional to 138,135,493.67, 190,625,812.09 and 76,254,503.63 is: 105,230,569.59
Step by Step Solution
- Step 1: Write the proportion equation
138,135,493.67 : 190,625,812.09 = 76,254,503.63 : x - Step 2: Convert to fraction form
138,135,493.67/190,625,812.09 = 76,254,503.63/x - Step 3: Cross multiply
138,135,493.67x = 190,625,812.09 × 76,254,503.63 - Step 4: Simplify right side
138,135,493.67x = 14,536,076,678,844,838 - Step 5: Solve for x
x = 14,536,076,678,844,838/138,135,493.67 - Step 6: Final answer
x = 105,230,569.59
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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.