Finding the Fourth Proportional to 151,416.80, 208,959.94 and 86,897.84
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Solution
The fourth proportional to 151,416.80, 208,959.94 and 86,897.84 is: 119,921.75
Step by Step Solution
- Step 1: Write the proportion equation
151,416.80 : 208,959.94 = 86,897.84 : x - Step 2: Convert to fraction form
151,416.80/208,959.94 = 86,897.84/x - Step 3: Cross multiply
151,416.80x = 208,959.94 × 86,897.84 - Step 4: Simplify right side
151,416.80x = 18,158,167,432.53 - Step 5: Solve for x
x = 18,158,167,432.53/151,416.80 - Step 6: Final answer
x = 119,921.75
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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.