Finding the Fourth Proportional to 128,750.40, 193,125.60 and 97,646.40
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Solution
The fourth proportional to 128,750.40, 193,125.60 and 97,646.40 is: 146,469.60
Step by Step Solution
- Step 1: Write the proportion equation
128,750.40 : 193,125.60 = 97,646.40 : x - Step 2: Convert to fraction form
128,750.40/193,125.60 = 97,646.40/x - Step 3: Cross multiply
128,750.40x = 193,125.60 × 97,646.40 - Step 4: Simplify right side
128,750.40x = 18,858,019,587.84 - Step 5: Solve for x
x = 18,858,019,587.84/128,750.40 - Step 6: Final answer
x = 146,469.60
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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.