Finding the Fourth Proportional to 151,731.68, 209,389.52 and 84,663.68
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Solution
The fourth proportional to 151,731.68, 209,389.52 and 84,663.68 is: 116,835.77
Step by Step Solution
- Step 1: Write the proportion equation
151,731.68 : 209,389.52 = 84,663.68 : x - Step 2: Convert to fraction form
151,731.68/209,389.52 = 84,663.68/x - Step 3: Cross multiply
151,731.68x = 209,389.52 × 84,663.68 - Step 4: Simplify right side
151,731.68x = 17,727,687,316.63 - Step 5: Solve for x
x = 17,727,687,316.63/151,731.68 - Step 6: Final answer
x = 116,835.77
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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.