Finding the Fourth Proportional to 128,542.84, 177,343.50 and 83,753.08
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Solution
The fourth proportional to 128,542.84, 177,343.50 and 83,753.08 is: 115,549.53
Step by Step Solution
- Step 1: Write the proportion equation
128,542.84 : 177,343.50 = 83,753.08 : x - Step 2: Convert to fraction form
128,542.84/177,343.50 = 83,753.08/x - Step 3: Cross multiply
128,542.84x = 177,343.50 × 83,753.08 - Step 4: Simplify right side
128,542.84x = 14,853,064,342.98 - Step 5: Solve for x
x = 14,853,064,342.98/128,542.84 - Step 6: Final answer
x = 115,549.53
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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.