Finding the Fourth Proportional to 118,631.96, 163,712.10 and 64,916.99
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Solution
The fourth proportional to 118,631.96, 163,712.10 and 64,916.99 is: 89,585.43
Step by Step Solution
- Step 1: Write the proportion equation
118,631.96 : 163,712.10 = 64,916.99 : x - Step 2: Convert to fraction form
118,631.96/163,712.10 = 64,916.99/x - Step 3: Cross multiply
118,631.96x = 163,712.10 × 64,916.99 - Step 4: Simplify right side
118,631.96x = 10,627,695,940.02 - Step 5: Solve for x
x = 10,627,695,940.02/118,631.96 - Step 6: Final answer
x = 89,585.43
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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.