Finding the Fourth Proportional to 178,428.81, 246,253.63 and 102,977.31
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Solution
The fourth proportional to 178,428.81, 246,253.63 and 102,977.31 is: 142,121.31
Step by Step Solution
- Step 1: Write the proportion equation
178,428.81 : 246,253.63 = 102,977.31 : x - Step 2: Convert to fraction form
178,428.81/246,253.63 = 102,977.31/x - Step 3: Cross multiply
178,428.81x = 246,253.63 × 102,977.31 - Step 4: Simplify right side
178,428.81x = 25,358,536,395.14 - Step 5: Solve for x
x = 25,358,536,395.14/178,428.81 - Step 6: Final answer
x = 142,121.31
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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.