Finding the Fourth Proportional to 157,916.48, 217,924.29 and 86,296.95
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Solution
The fourth proportional to 157,916.48, 217,924.29 and 86,296.95 is: 119,089.55
Step by Step Solution
- Step 1: Write the proportion equation
157,916.48 : 217,924.29 = 86,296.95 : x - Step 2: Convert to fraction form
157,916.48/217,924.29 = 86,296.95/x - Step 3: Cross multiply
157,916.48x = 217,924.29 × 86,296.95 - Step 4: Simplify right side
157,916.48x = 18,806,201,557.92 - Step 5: Solve for x
x = 18,806,201,557.92/157,916.48 - Step 6: Final answer
x = 119,089.55
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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.