Finding the Fourth Proportional to 154,900.05, 213,748.95 and 86,907.84
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Solution
The fourth proportional to 154,900.05, 213,748.95 and 86,907.84 is: 119,925.46
Step by Step Solution
- Step 1: Write the proportion equation
154,900.05 : 213,748.95 = 86,907.84 : x - Step 2: Convert to fraction form
154,900.05/213,748.95 = 86,907.84/x - Step 3: Cross multiply
154,900.05x = 213,748.95 × 86,907.84 - Step 4: Simplify right side
154,900.05x = 18,576,459,546.77 - Step 5: Solve for x
x = 18,576,459,546.77/154,900.05 - Step 6: Final answer
x = 119,925.46
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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.