Finding the Fourth Proportional to 122,370.72, 168,864.12 and 68,645.76
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Solution
The fourth proportional to 122,370.72, 168,864.12 and 68,645.76 is: 94,726.96
Step by Step Solution
- Step 1: Write the proportion equation
122,370.72 : 168,864.12 = 68,645.76 : x - Step 2: Convert to fraction form
122,370.72/168,864.12 = 68,645.76/x - Step 3: Cross multiply
122,370.72x = 168,864.12 × 68,645.76 - Step 4: Simplify right side
122,370.72x = 11,591,805,854.13 - Step 5: Solve for x
x = 11,591,805,854.13/122,370.72 - Step 6: Final answer
x = 94,726.96
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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.