Finding the Fourth Proportional to 156,139.19, 215,472.18 and 84,519.80
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Solution
The fourth proportional to 156,139.19, 215,472.18 and 84,519.80 is: 116,637.38
Step by Step Solution
- Step 1: Write the proportion equation
156,139.19 : 215,472.18 = 84,519.80 : x - Step 2: Convert to fraction form
156,139.19/215,472.18 = 84,519.80/x - Step 3: Cross multiply
156,139.19x = 215,472.18 × 84,519.80 - Step 4: Simplify right side
156,139.19x = 18,211,665,559.16 - Step 5: Solve for x
x = 18,211,665,559.16/156,139.19 - Step 6: Final answer
x = 116,637.38
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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.