Finding the Fourth Proportional to 155,315.16, 214,229.55 and 100,769.88
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Solution
The fourth proportional to 155,315.16, 214,229.55 and 100,769.88 is: 138,994.07
Step by Step Solution
- Step 1: Write the proportion equation
155,315.16 : 214,229.55 = 100,769.88 : x - Step 2: Convert to fraction form
155,315.16/214,229.55 = 100,769.88/x - Step 3: Cross multiply
155,315.16x = 214,229.55 × 100,769.88 - Step 4: Simplify right side
155,315.16x = 21,587,886,101.94 - Step 5: Solve for x
x = 21,587,886,101.94/155,315.16 - Step 6: Final answer
x = 138,994.07
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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.