Finding the Fourth Proportional to 157,838.69, 217,809.38 and 86,204.99
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Solution
The fourth proportional to 157,838.69, 217,809.38 and 86,204.99 is: 118,958.51
Step by Step Solution
- Step 1: Write the proportion equation
157,838.69 : 217,809.38 = 86,204.99 : x - Step 2: Convert to fraction form
157,838.69/217,809.38 = 86,204.99/x - Step 3: Cross multiply
157,838.69x = 217,809.38 × 86,204.99 - Step 4: Simplify right side
157,838.69x = 18,776,255,424.81 - Step 5: Solve for x
x = 18,776,255,424.81/157,838.69 - Step 6: Final answer
x = 118,958.51
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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.