Finding the Fourth Proportional to 121,849.08, 168,170.76 and 74,117.40
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Solution
The fourth proportional to 121,849.08, 168,170.76 and 74,117.40 is: 102,293.59
Step by Step Solution
- Step 1: Write the proportion equation
121,849.08 : 168,170.76 = 74,117.40 : x - Step 2: Convert to fraction form
121,849.08/168,170.76 = 74,117.40/x - Step 3: Cross multiply
121,849.08x = 168,170.76 × 74,117.40 - Step 4: Simplify right side
121,849.08x = 12,464,379,487.22 - Step 5: Solve for x
x = 12,464,379,487.22/121,849.08 - Step 6: Final answer
x = 102,293.59
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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.