Finding the Fourth Proportional to 155,119.62, 214,085.12 and 87,136.62
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Solution
The fourth proportional to 155,119.62, 214,085.12 and 87,136.62 is: 120,259.80
Step by Step Solution
- Step 1: Write the proportion equation
155,119.62 : 214,085.12 = 87,136.62 : x - Step 2: Convert to fraction form
155,119.62/214,085.12 = 87,136.62/x - Step 3: Cross multiply
155,119.62x = 214,085.12 × 87,136.62 - Step 4: Simplify right side
155,119.62x = 18,654,653,749.09 - Step 5: Solve for x
x = 18,654,653,749.09/155,119.62 - Step 6: Final answer
x = 120,259.80
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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.