Finding the Fourth Proportional to 139,709.81, 192,803.79 and 98,946.96
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Solution
The fourth proportional to 139,709.81, 192,803.79 and 98,946.96 is: 136,549.82
Step by Step Solution
- Step 1: Write the proportion equation
139,709.81 : 192,803.79 = 98,946.96 : x - Step 2: Convert to fraction form
139,709.81/192,803.79 = 98,946.96/x - Step 3: Cross multiply
139,709.81x = 192,803.79 × 98,946.96 - Step 4: Simplify right side
139,709.81x = 19,077,348,896.98 - Step 5: Solve for x
x = 19,077,348,896.98/139,709.81 - Step 6: Final answer
x = 136,549.82
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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.