Finding the Fourth Proportional to 140,355.04, 193,663.20 and 83,771.68
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Solution
The fourth proportional to 140,355.04, 193,663.20 and 83,771.68 is: 115,588.95
Step by Step Solution
- Step 1: Write the proportion equation
140,355.04 : 193,663.20 = 83,771.68 : x - Step 2: Convert to fraction form
140,355.04/193,663.20 = 83,771.68/x - Step 3: Cross multiply
140,355.04x = 193,663.20 × 83,771.68 - Step 4: Simplify right side
140,355.04x = 16,223,491,618.18 - Step 5: Solve for x
x = 16,223,491,618.18/140,355.04 - Step 6: Final answer
x = 115,588.95
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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.