Finding the Fourth Proportional to 98,020.24, 135,332.68 and 87,391.44
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Solution
The fourth proportional to 98,020.24, 135,332.68 and 87,391.44 is: 120,657.91
Step by Step Solution
- Step 1: Write the proportion equation
98,020.24 : 135,332.68 = 87,391.44 : x - Step 2: Convert to fraction form
98,020.24/135,332.68 = 87,391.44/x - Step 3: Cross multiply
98,020.24x = 135,332.68 × 87,391.44 - Step 4: Simplify right side
98,020.24x = 11,826,917,784.26 - Step 5: Solve for x
x = 11,826,917,784.26/98,020.24 - Step 6: Final answer
x = 120,657.91
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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.