Finding the Fourth Proportional to 115,946.40, 160,020.86 and 68,204.19
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Solution
The fourth proportional to 115,946.40, 160,020.86 and 68,204.19 is: 94,130.50
Step by Step Solution
- Step 1: Write the proportion equation
115,946.40 : 160,020.86 = 68,204.19 : x - Step 2: Convert to fraction form
115,946.40/160,020.86 = 68,204.19/x - Step 3: Cross multiply
115,946.40x = 160,020.86 × 68,204.19 - Step 4: Simplify right side
115,946.40x = 10,914,092,798.38 - Step 5: Solve for x
x = 10,914,092,798.38/115,946.40 - Step 6: Final answer
x = 94,130.50
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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.