Finding the Fourth Proportional to 157,387.68, 217,194.68 and 85,767.48
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Solution
The fourth proportional to 157,387.68, 217,194.68 and 85,767.48 is: 118,358.95
Step by Step Solution
- Step 1: Write the proportion equation
157,387.68 : 217,194.68 = 85,767.48 : x - Step 2: Convert to fraction form
157,387.68/217,194.68 = 85,767.48/x - Step 3: Cross multiply
157,387.68x = 217,194.68 × 85,767.48 - Step 4: Simplify right side
157,387.68x = 18,628,240,587.43 - Step 5: Solve for x
x = 18,628,240,587.43/157,387.68 - Step 6: Final answer
x = 118,358.95
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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.