Finding the Fourth Proportional to 212,899.04, 319,348.61 and 86,607.99
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Solution
The fourth proportional to 212,899.04, 319,348.61 and 86,607.99 is: 129,912.01
Step by Step Solution
- Step 1: Write the proportion equation
212,899.04 : 319,348.61 = 86,607.99 : x - Step 2: Convert to fraction form
212,899.04/319,348.61 = 86,607.99/x - Step 3: Cross multiply
212,899.04x = 319,348.61 × 86,607.99 - Step 4: Simplify right side
212,899.04x = 27,658,140,788.35 - Step 5: Solve for x
x = 27,658,140,788.35/212,899.04 - Step 6: Final answer
x = 129,912.01
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.