Finding the Fourth Proportional to 129,225,161.12, 178,331,276.79 and 70,489,106.24
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Solution
The fourth proportional to 129,225,161.12, 178,331,276.79 and 70,489,106.24 is: 97,275,269.04
Step by Step Solution
- Step 1: Write the proportion equation
129,225,161.12 : 178,331,276.79 = 70,489,106.24 : x - Step 2: Convert to fraction form
129,225,161.12/178,331,276.79 = 70,489,106.24/x - Step 3: Cross multiply
129,225,161.12x = 178,331,276.79 × 70,489,106.24 - Step 4: Simplify right side
129,225,161.12x = 12,570,412,314,673,500 - Step 5: Solve for x
x = 12,570,412,314,673,500/129,225,161.12 - Step 6: Final answer
x = 97,275,269.04
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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.