Finding the Fourth Proportional to 125,739.80, 188,828.40 and 121,803.20
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Solution
The fourth proportional to 125,739.80, 188,828.40 and 121,803.20 is: 182,916.65
Step by Step Solution
- Step 1: Write the proportion equation
125,739.80 : 188,828.40 = 121,803.20 : x - Step 2: Convert to fraction form
125,739.80/188,828.40 = 121,803.20/x - Step 3: Cross multiply
125,739.80x = 188,828.40 × 121,803.20 - Step 4: Simplify right side
125,739.80x = 22,999,903,370.88 - Step 5: Solve for x
x = 22,999,903,370.88/125,739.80 - Step 6: Final answer
x = 182,916.65
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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.