Finding the Fourth Proportional to 138,477.13, 191,099.28 and 77,227.19
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Solution
The fourth proportional to 138,477.13, 191,099.28 and 77,227.19 is: 106,573.99
Step by Step Solution
- Step 1: Write the proportion equation
138,477.13 : 191,099.28 = 77,227.19 : x - Step 2: Convert to fraction form
138,477.13/191,099.28 = 77,227.19/x - Step 3: Cross multiply
138,477.13x = 191,099.28 × 77,227.19 - Step 4: Simplify right side
138,477.13x = 14,758,060,405.42 - Step 5: Solve for x
x = 14,758,060,405.42/138,477.13 - Step 6: Final answer
x = 106,573.99
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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.