Finding the Fourth Proportional to 98,739.15, 136,259.46 and 53,416.99
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Solution
The fourth proportional to 98,739.15, 136,259.46 and 53,416.99 is: 73,715.14
Step by Step Solution
- Step 1: Write the proportion equation
98,739.15 : 136,259.46 = 53,416.99 : x - Step 2: Convert to fraction form
98,739.15/136,259.46 = 53,416.99/x - Step 3: Cross multiply
98,739.15x = 136,259.46 × 53,416.99 - Step 4: Simplify right side
98,739.15x = 7,278,570,212.23 - Step 5: Solve for x
x = 7,278,570,212.23/98,739.15 - Step 6: Final answer
x = 73,715.14
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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.