Finding the Fourth Proportional to 125,948.80, 188,485.80 and 86,582.80
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Solution
The fourth proportional to 125,948.80, 188,485.80 and 86,582.80 is: 129,573.51
Step by Step Solution
- Step 1: Write the proportion equation
125,948.80 : 188,485.80 = 86,582.80 : x - Step 2: Convert to fraction form
125,948.80/188,485.80 = 86,582.80/x - Step 3: Cross multiply
125,948.80x = 188,485.80 × 86,582.80 - Step 4: Simplify right side
125,948.80x = 16,319,628,324.24 - Step 5: Solve for x
x = 16,319,628,324.24/125,948.80 - Step 6: Final answer
x = 129,573.51
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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.