Finding the Fourth Proportional to 135,946.80, 203,920.20 and 79,813.80
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Solution
The fourth proportional to 135,946.80, 203,920.20 and 79,813.80 is: 119,720.70
Step by Step Solution
- Step 1: Write the proportion equation
135,946.80 : 203,920.20 = 79,813.80 : x - Step 2: Convert to fraction form
135,946.80/203,920.20 = 79,813.80/x - Step 3: Cross multiply
135,946.80x = 203,920.20 × 79,813.80 - Step 4: Simplify right side
135,946.80x = 16,275,646,058.76 - Step 5: Solve for x
x = 16,275,646,058.76/135,946.80 - Step 6: Final answer
x = 119,720.70
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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.