Finding the Fourth Proportional to 157,575.19, 217,455.15 and 85,955.53
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Solution
The fourth proportional to 157,575.19, 217,455.15 and 85,955.53 is: 118,619.39
Step by Step Solution
- Step 1: Write the proportion equation
157,575.19 : 217,455.15 = 85,955.53 : x - Step 2: Convert to fraction form
157,575.19/217,455.15 = 85,955.53/x - Step 3: Cross multiply
157,575.19x = 217,455.15 × 85,955.53 - Step 4: Simplify right side
157,575.19x = 18,691,472,669.48 - Step 5: Solve for x
x = 18,691,472,669.48/157,575.19 - Step 6: Final answer
x = 118,619.39
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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.