Finding the Fourth Proportional to 142,028.67, 212,654.40 and 138,264.19
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Solution
The fourth proportional to 142,028.67, 212,654.40 and 138,264.19 is: 207,017.99
Step by Step Solution
- Step 1: Write the proportion equation
142,028.67 : 212,654.40 = 138,264.19 : x - Step 2: Convert to fraction form
142,028.67/212,654.40 = 138,264.19/x - Step 3: Cross multiply
142,028.67x = 212,654.40 × 138,264.19 - Step 4: Simplify right side
142,028.67x = 29,402,488,365.94 - Step 5: Solve for x
x = 29,402,488,365.94/142,028.67 - Step 6: Final answer
x = 207,017.99
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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.