Finding the Fourth Proportional to 155,776.80, 214,971.92 and 84,156.88
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Solution
The fourth proportional to 155,776.80, 214,971.92 and 84,156.88 is: 116,136.46
Step by Step Solution
- Step 1: Write the proportion equation
155,776.80 : 214,971.92 = 84,156.88 : x - Step 2: Convert to fraction form
155,776.80/214,971.92 = 84,156.88/x - Step 3: Cross multiply
155,776.80x = 214,971.92 × 84,156.88 - Step 4: Simplify right side
155,776.80x = 18,091,366,074.81 - Step 5: Solve for x
x = 18,091,366,074.81/155,776.80 - Step 6: Final answer
x = 116,136.46
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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.