Finding the Fourth Proportional to 128,920.08, 193,380.48 and 40,176.48
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Solution
The fourth proportional to 128,920.08, 193,380.48 and 40,176.48 is: 60,264.83
Step by Step Solution
- Step 1: Write the proportion equation
128,920.08 : 193,380.48 = 40,176.48 : x - Step 2: Convert to fraction form
128,920.08/193,380.48 = 40,176.48/x - Step 3: Cross multiply
128,920.08x = 193,380.48 × 40,176.48 - Step 4: Simplify right side
128,920.08x = 7,769,346,987.11 - Step 5: Solve for x
x = 7,769,346,987.11/128,920.08 - Step 6: Final answer
x = 60,264.83
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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.