Finding the Fourth Proportional to 153,862.80, 230,664.60 and 79,990.80
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Solution
The fourth proportional to 153,862.80, 230,664.60 and 79,990.80 is: 119,918.82
Step by Step Solution
- Step 1: Write the proportion equation
153,862.80 : 230,664.60 = 79,990.80 : x - Step 2: Convert to fraction form
153,862.80/230,664.60 = 79,990.80/x - Step 3: Cross multiply
153,862.80x = 230,664.60 × 79,990.80 - Step 4: Simplify right side
153,862.80x = 18,451,045,885.68 - Step 5: Solve for x
x = 18,451,045,885.68/153,862.80 - Step 6: Final answer
x = 119,918.82
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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.