Finding the Fourth Proportional to 91,195.80, 136,880.10 and 56,203.80
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Solution
The fourth proportional to 91,195.80, 136,880.10 and 56,203.80 is: 84,358.95
Step by Step Solution
- Step 1: Write the proportion equation
91,195.80 : 136,880.10 = 56,203.80 : x - Step 2: Convert to fraction form
91,195.80/136,880.10 = 56,203.80/x - Step 3: Cross multiply
91,195.80x = 136,880.10 × 56,203.80 - Step 4: Simplify right side
91,195.80x = 7,693,181,764.38 - Step 5: Solve for x
x = 7,693,181,764.38/91,195.80 - Step 6: Final answer
x = 84,358.95
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1.5x scale
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.