Finding the Fourth Proportional to 157,936.48, 217,951.98 and 86,317.02
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Solution
The fourth proportional to 157,936.48, 217,951.98 and 86,317.02 is: 119,117.28
Step by Step Solution
- Step 1: Write the proportion equation
157,936.48 : 217,951.98 = 86,317.02 : x - Step 2: Convert to fraction form
157,936.48/217,951.98 = 86,317.02/x - Step 3: Cross multiply
157,936.48x = 217,951.98 × 86,317.02 - Step 4: Simplify right side
157,936.48x = 18,812,964,601.40 - Step 5: Solve for x
x = 18,812,964,601.40/157,936.48 - Step 6: Final answer
x = 119,117.28
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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.