Finding the Fourth Proportional to 105,750.01, 145,934.62 and 65,455.75
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Solution
The fourth proportional to 105,750.01, 145,934.62 and 65,455.75 is: 90,328.69
Step by Step Solution
- Step 1: Write the proportion equation
105,750.01 : 145,934.62 = 65,455.75 : x - Step 2: Convert to fraction form
105,750.01/145,934.62 = 65,455.75/x - Step 3: Cross multiply
105,750.01x = 145,934.62 × 65,455.75 - Step 4: Simplify right side
105,750.01x = 9,552,260,003.07 - Step 5: Solve for x
x = 9,552,260,003.07/105,750.01 - Step 6: Final answer
x = 90,328.69
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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.