Finding the Fourth Proportional to 138,100.66, 190,588.88 and 84,395.95
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Solution
The fourth proportional to 138,100.66, 190,588.88 and 84,395.95 is: 116,472.50
Step by Step Solution
- Step 1: Write the proportion equation
138,100.66 : 190,588.88 = 84,395.95 : x - Step 2: Convert to fraction form
138,100.66/190,588.88 = 84,395.95/x - Step 3: Cross multiply
138,100.66x = 190,588.88 × 84,395.95 - Step 4: Simplify right side
138,100.66x = 16,084,929,321.55 - Step 5: Solve for x
x = 16,084,929,321.55/138,100.66 - Step 6: Final answer
x = 116,472.50
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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.