Finding the Fourth Proportional to 98,734.92, 136,254.05 and 53,412.80
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Solution
The fourth proportional to 98,734.92, 136,254.05 and 53,412.80 is: 73,709.59
Step by Step Solution
- Step 1: Write the proportion equation
98,734.92 : 136,254.05 = 53,412.80 : x - Step 2: Convert to fraction form
98,734.92/136,254.05 = 53,412.80/x - Step 3: Cross multiply
98,734.92x = 136,254.05 × 53,412.80 - Step 4: Simplify right side
98,734.92x = 7,277,710,340.23 - Step 5: Solve for x
x = 7,277,710,340.23/98,734.92 - Step 6: Final answer
x = 73,709.59
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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.