Finding the Fourth Proportional to 134,778.40, 202,216.20 and 129,918.40
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Solution
The fourth proportional to 134,778.40, 202,216.20 and 129,918.40 is: 194,924.45
Step by Step Solution
- Step 1: Write the proportion equation
134,778.40 : 202,216.20 = 129,918.40 : x - Step 2: Convert to fraction form
134,778.40/202,216.20 = 129,918.40/x - Step 3: Cross multiply
134,778.40x = 202,216.20 × 129,918.40 - Step 4: Simplify right side
134,778.40x = 26,271,605,158.08 - Step 5: Solve for x
x = 26,271,605,158.08/134,778.40 - Step 6: Final answer
x = 194,924.45
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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.