Finding the Fourth Proportional to 135,166.84, 186,513.96 and 74,729.32
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Solution
The fourth proportional to 135,166.84, 186,513.96 and 74,729.32 is: 103,117.46
Step by Step Solution
- Step 1: Write the proportion equation
135,166.84 : 186,513.96 = 74,729.32 : x - Step 2: Convert to fraction form
135,166.84/186,513.96 = 74,729.32/x - Step 3: Cross multiply
135,166.84x = 186,513.96 × 74,729.32 - Step 4: Simplify right side
135,166.84x = 13,938,061,401.31 - Step 5: Solve for x
x = 13,938,061,401.31/135,166.84 - Step 6: Final answer
x = 103,117.46
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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.