Finding the Fourth Proportional to 178,925.12, 246,971.68 and 115,262.72
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Solution
The fourth proportional to 178,925.12, 246,971.68 and 115,262.72 is: 159,097.99
Step by Step Solution
- Step 1: Write the proportion equation
178,925.12 : 246,971.68 = 115,262.72 : x - Step 2: Convert to fraction form
178,925.12/246,971.68 = 115,262.72/x - Step 3: Cross multiply
178,925.12x = 246,971.68 × 115,262.72 - Step 4: Simplify right side
178,925.12x = 28,466,627,599.77 - Step 5: Solve for x
x = 28,466,627,599.77/178,925.12 - Step 6: Final answer
x = 159,097.99
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1.5x scale
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.