Finding the Fourth Proportional to 121,855.10, 168,160.59 and 68,140.14
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Solution
The fourth proportional to 121,855.10, 168,160.59 and 68,140.14 is: 94,033.71
Step by Step Solution
- Step 1: Write the proportion equation
121,855.10 : 168,160.59 = 68,140.14 : x - Step 2: Convert to fraction form
121,855.10/168,160.59 = 68,140.14/x - Step 3: Cross multiply
121,855.10x = 168,160.59 × 68,140.14 - Step 4: Simplify right side
121,855.10x = 11,458,486,145.08 - Step 5: Solve for x
x = 11,458,486,145.08/121,855.10 - Step 6: Final answer
x = 94,033.71
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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.