Finding the Fourth Proportional to 132,969.42, 183,479.65 and 76,380.80
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Solution
The fourth proportional to 132,969.42, 183,479.65 and 76,380.80 is: 105,395.07
Step by Step Solution
- Step 1: Write the proportion equation
132,969.42 : 183,479.65 = 76,380.80 : x - Step 2: Convert to fraction form
132,969.42/183,479.65 = 76,380.80/x - Step 3: Cross multiply
132,969.42x = 183,479.65 × 76,380.80 - Step 4: Simplify right side
132,969.42x = 14,014,321,342.37 - Step 5: Solve for x
x = 14,014,321,342.37/132,969.42 - Step 6: Final answer
x = 105,395.07
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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.