Finding the Fourth Proportional to 118,411.13, 163,405.45 and 64,694.99
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Solution
The fourth proportional to 118,411.13, 163,405.45 and 64,694.99 is: 89,278.05
Step by Step Solution
- Step 1: Write the proportion equation
118,411.13 : 163,405.45 = 64,694.99 : x - Step 2: Convert to fraction form
118,411.13/163,405.45 = 64,694.99/x - Step 3: Cross multiply
118,411.13x = 163,405.45 × 64,694.99 - Step 4: Simplify right side
118,411.13x = 10,571,513,953.70 - Step 5: Solve for x
x = 10,571,513,953.70/118,411.13 - Step 6: Final answer
x = 89,278.05
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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.