Finding the Fourth Proportional to 121,326.60, 182,184.30 and 91,777.80
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Solution
The fourth proportional to 121,326.60, 182,184.30 and 91,777.80 is: 137,813.75
Step by Step Solution
- Step 1: Write the proportion equation
121,326.60 : 182,184.30 = 91,777.80 : x - Step 2: Convert to fraction form
121,326.60/182,184.30 = 91,777.80/x - Step 3: Cross multiply
121,326.60x = 182,184.30 × 91,777.80 - Step 4: Simplify right side
121,326.60x = 16,720,474,248.54 - Step 5: Solve for x
x = 16,720,474,248.54/121,326.60 - Step 6: Final answer
x = 137,813.75
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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.