Finding the Fourth Proportional to 118,439.60, 163,446.30 and 64,724.99
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Solution
The fourth proportional to 118,439.60, 163,446.30 and 64,724.99 is: 89,320.29
Step by Step Solution
- Step 1: Write the proportion equation
118,439.60 : 163,446.30 = 64,724.99 : x - Step 2: Convert to fraction form
118,439.60/163,446.30 = 64,724.99/x - Step 3: Cross multiply
118,439.60x = 163,446.30 × 64,724.99 - Step 4: Simplify right side
118,439.60x = 10,579,059,315.81 - Step 5: Solve for x
x = 10,579,059,315.81/118,439.60 - Step 6: Final answer
x = 89,320.29
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1.5x scale
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.