Finding the Fourth Proportional to 139,484.27, 192,497.24 and 78,236.21
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Solution
The fourth proportional to 139,484.27, 192,497.24 and 78,236.21 is: 107,970.99
Step by Step Solution
- Step 1: Write the proportion equation
139,484.27 : 192,497.24 = 78,236.21 : x - Step 2: Convert to fraction form
139,484.27/192,497.24 = 78,236.21/x - Step 3: Cross multiply
139,484.27x = 192,497.24 × 78,236.21 - Step 4: Simplify right side
139,484.27x = 15,060,254,493.06 - Step 5: Solve for x
x = 15,060,254,493.06/139,484.27 - Step 6: Final answer
x = 107,970.99
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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.