Finding the Fourth Proportional to 132,351.48, 182,644.47 and 74,990.70
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Solution
The fourth proportional to 132,351.48, 182,644.47 and 74,990.70 is: 103,486.84
Step by Step Solution
- Step 1: Write the proportion equation
132,351.48 : 182,644.47 = 74,990.70 : x - Step 2: Convert to fraction form
132,351.48/182,644.47 = 74,990.70/x - Step 3: Cross multiply
132,351.48x = 182,644.47 × 74,990.70 - Step 4: Simplify right side
132,351.48x = 13,696,636,656.43 - Step 5: Solve for x
x = 13,696,636,656.43/132,351.48 - Step 6: Final answer
x = 103,486.84
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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.