Finding the Fourth Proportional to 148,930.31, 205,523.84 and 81,862.31
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Solution
The fourth proportional to 148,930.31, 205,523.84 and 81,862.31 is: 112,969.99
Step by Step Solution
- Step 1: Write the proportion equation
148,930.31 : 205,523.84 = 81,862.31 : x - Step 2: Convert to fraction form
148,930.31/205,523.84 = 81,862.31/x - Step 3: Cross multiply
148,930.31x = 205,523.84 × 81,862.31 - Step 4: Simplify right side
148,930.31x = 16,824,656,406.97 - Step 5: Solve for x
x = 16,824,656,406.97/148,930.31 - Step 6: Final answer
x = 112,969.99
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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.