Finding the Fourth Proportional to 98,313.21, 135,233.96 and 86,153.49
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Solution
The fourth proportional to 98,313.21, 135,233.96 and 86,153.49 is: 118,507.75
Step by Step Solution
- Step 1: Write the proportion equation
98,313.21 : 135,233.96 = 86,153.49 : x - Step 2: Convert to fraction form
98,313.21/135,233.96 = 86,153.49/x - Step 3: Cross multiply
98,313.21x = 135,233.96 × 86,153.49 - Step 4: Simplify right side
98,313.21x = 11,650,877,189.75 - Step 5: Solve for x
x = 11,650,877,189.75/98,313.21 - Step 6: Final answer
x = 118,507.75
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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.