Finding the Fourth Proportional to 97,074.60, 133,930.62 and 79,138.68
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Solution
The fourth proportional to 97,074.60, 133,930.62 and 79,138.68 is: 109,185.02
Step by Step Solution
- Step 1: Write the proportion equation
97,074.60 : 133,930.62 = 79,138.68 : x - Step 2: Convert to fraction form
97,074.60/133,930.62 = 79,138.68/x - Step 3: Cross multiply
97,074.60x = 133,930.62 × 79,138.68 - Step 4: Simplify right side
97,074.60x = 10,599,092,478.38 - Step 5: Solve for x
x = 10,599,092,478.38/97,074.60 - Step 6: Final answer
x = 109,185.02
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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.