Finding the Fourth Proportional to 149,247.41, 205,959.48 and 81,263.60
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Solution
The fourth proportional to 149,247.41, 205,959.48 and 81,263.60 is: 112,142.71
Step by Step Solution
- Step 1: Write the proportion equation
149,247.41 : 205,959.48 = 81,263.60 : x - Step 2: Convert to fraction form
149,247.41/205,959.48 = 81,263.60/x - Step 3: Cross multiply
149,247.41x = 205,959.48 × 81,263.60 - Step 4: Simplify right side
149,247.41x = 16,737,007,769.13 - Step 5: Solve for x
x = 16,737,007,769.13/149,247.41 - Step 6: Final answer
x = 112,142.71
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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.