Finding the Fourth Proportional to 157,607.19, 217,497.67 and 85,987.19
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Solution
The fourth proportional to 157,607.19, 217,497.67 and 85,987.19 is: 118,662.18
Step by Step Solution
- Step 1: Write the proportion equation
157,607.19 : 217,497.67 = 85,987.19 : x - Step 2: Convert to fraction form
157,607.19/217,497.67 = 85,987.19/x - Step 3: Cross multiply
157,607.19x = 217,497.67 × 85,987.19 - Step 4: Simplify right side
157,607.19x = 18,702,013,474.85 - Step 5: Solve for x
x = 18,702,013,474.85/157,607.19 - Step 6: Final answer
x = 118,662.18
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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.