Finding the Fourth Proportional to 157,916.76, 217,927.98 and 86,299.80
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Solution
The fourth proportional to 157,916.76, 217,927.98 and 86,299.80 is: 119,095.28
Step by Step Solution
- Step 1: Write the proportion equation
157,916.76 : 217,927.98 = 86,299.80 : x - Step 2: Convert to fraction form
157,916.76/217,927.98 = 86,299.80/x - Step 3: Cross multiply
157,916.76x = 217,927.98 × 86,299.80 - Step 4: Simplify right side
157,916.76x = 18,807,141,088.40 - Step 5: Solve for x
x = 18,807,141,088.40/157,916.76 - Step 6: Final answer
x = 119,095.28
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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.