Finding the Fourth Proportional to 98,000.13, 135,281.55 and 66,212.09
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Solution
The fourth proportional to 98,000.13, 135,281.55 and 66,212.09 is: 91,400.63
Step by Step Solution
- Step 1: Write the proportion equation
98,000.13 : 135,281.55 = 66,212.09 : x - Step 2: Convert to fraction form
98,000.13/135,281.55 = 66,212.09/x - Step 3: Cross multiply
98,000.13x = 135,281.55 × 66,212.09 - Step 4: Simplify right side
98,000.13x = 8,957,273,487.53 - Step 5: Solve for x
x = 8,957,273,487.53/98,000.13 - Step 6: Final answer
x = 91,400.63
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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.