Finding the Fourth Proportional to 135,323.55, 186,728.01 and 77,941.53
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Solution
The fourth proportional to 135,323.55, 186,728.01 and 77,941.53 is: 107,548.66
Step by Step Solution
- Step 1: Write the proportion equation
135,323.55 : 186,728.01 = 77,941.53 : x - Step 2: Convert to fraction form
135,323.55/186,728.01 = 77,941.53/x - Step 3: Cross multiply
135,323.55x = 186,728.01 × 77,941.53 - Step 4: Simplify right side
135,323.55x = 14,553,866,326.44 - Step 5: Solve for x
x = 14,553,866,326.44/135,323.55 - Step 6: Final answer
x = 107,548.66
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1.5x scale
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.