Finding the Fourth Proportional to 135,235.80, 202,853.70 and 68,686.20
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Solution
The fourth proportional to 135,235.80, 202,853.70 and 68,686.20 is: 103,029.30
Step by Step Solution
- Step 1: Write the proportion equation
135,235.80 : 202,853.70 = 68,686.20 : x - Step 2: Convert to fraction form
135,235.80/202,853.70 = 68,686.20/x - Step 3: Cross multiply
135,235.80x = 202,853.70 × 68,686.20 - Step 4: Simplify right side
135,235.80x = 13,933,249,808.94 - Step 5: Solve for x
x = 13,933,249,808.94/135,235.80 - Step 6: Final answer
x = 103,029.30
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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.