Finding the Fourth Proportional to 157,962.24, 217,988.34 and 86,343.12
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Solution
The fourth proportional to 157,962.24, 217,988.34 and 86,343.12 is: 119,153.75
Step by Step Solution
- Step 1: Write the proportion equation
157,962.24 : 217,988.34 = 86,343.12 : x - Step 2: Convert to fraction form
157,962.24/217,988.34 = 86,343.12/x - Step 3: Cross multiply
157,962.24x = 217,988.34 × 86,343.12 - Step 4: Simplify right side
157,962.24x = 18,821,793,399.22 - Step 5: Solve for x
x = 18,821,793,399.22/157,962.24 - Step 6: Final answer
x = 119,153.75
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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.