Finding the Fourth Proportional to 139,161,984.26, 192,076,985.05 and 79,657,774.14
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Solution
The fourth proportional to 139,161,984.26, 192,076,985.05 and 79,657,774.14 is: 109,946,873.59
Step by Step Solution
- Step 1: Write the proportion equation
139,161,984.26 : 192,076,985.05 = 79,657,774.14 : x - Step 2: Convert to fraction form
139,161,984.26/192,076,985.05 = 79,657,774.14/x - Step 3: Cross multiply
139,161,984.26x = 192,076,985.05 × 79,657,774.14 - Step 4: Simplify right side
139,161,984.26x = 15,300,425,092,605,058 - Step 5: Solve for x
x = 15,300,425,092,605,058/139,161,984.26 - Step 6: Final answer
x = 109,946,873.59
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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.