Finding the Fourth Proportional to 157,881.09, 217,873.36 and 86,259.57
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Solution
The fourth proportional to 157,881.09, 217,873.36 and 86,259.57 is: 119,036.82
Step by Step Solution
- Step 1: Write the proportion equation
157,881.09 : 217,873.36 = 86,259.57 : x - Step 2: Convert to fraction form
157,881.09/217,873.36 = 86,259.57/x - Step 3: Cross multiply
157,881.09x = 217,873.36 × 86,259.57 - Step 4: Simplify right side
157,881.09x = 18,793,662,348.06 - Step 5: Solve for x
x = 18,793,662,348.06/157,881.09 - Step 6: Final answer
x = 119,036.82
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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.