Finding the Fourth Proportional to 105,348.13, 145,383.05 and 63,955.62
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Solution
The fourth proportional to 105,348.13, 145,383.05 and 63,955.62 is: 88,260.35
Step by Step Solution
- Step 1: Write the proportion equation
105,348.13 : 145,383.05 = 63,955.62 : x - Step 2: Convert to fraction form
105,348.13/145,383.05 = 63,955.62/x - Step 3: Cross multiply
105,348.13x = 145,383.05 × 63,955.62 - Step 4: Simplify right side
105,348.13x = 9,298,063,100.24 - Step 5: Solve for x
x = 9,298,063,100.24/105,348.13 - Step 6: Final answer
x = 88,260.35
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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.