Finding the Fourth Proportional to 118,411.70, 177,617.55 and 85,363.70
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Solution
The fourth proportional to 118,411.70, 177,617.55 and 85,363.70 is: 128,045.55
Step by Step Solution
- Step 1: Write the proportion equation
118,411.70 : 177,617.55 = 85,363.70 : x - Step 2: Convert to fraction form
118,411.70/177,617.55 = 85,363.70/x - Step 3: Cross multiply
118,411.70x = 177,617.55 × 85,363.70 - Step 4: Simplify right side
118,411.70x = 15,162,091,252.94 - Step 5: Solve for x
x = 15,162,091,252.94/118,411.70 - Step 6: Final answer
x = 128,045.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.