Finding the Fourth Proportional to 98,739.75, 136,260.95 and 54,027.75
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Solution
The fourth proportional to 98,739.75, 136,260.95 and 54,027.75 is: 74,558.34
Step by Step Solution
- Step 1: Write the proportion equation
98,739.75 : 136,260.95 = 54,027.75 : x - Step 2: Convert to fraction form
98,739.75/136,260.95 = 54,027.75/x - Step 3: Cross multiply
98,739.75x = 136,260.95 × 54,027.75 - Step 4: Simplify right side
98,739.75x = 7,361,872,271.22 - Step 5: Solve for x
x = 7,361,872,271.22/98,739.75 - Step 6: Final answer
x = 74,558.34
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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.