Finding the Fourth Proportional to 112,645.24, 168,781.26 and 79,201.91
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Solution
The fourth proportional to 112,645.24, 168,781.26 and 79,201.91 is: 118,671.67
Step by Step Solution
- Step 1: Write the proportion equation
112,645.24 : 168,781.26 = 79,201.91 : x - Step 2: Convert to fraction form
112,645.24/168,781.26 = 79,201.91/x - Step 3: Cross multiply
112,645.24x = 168,781.26 × 79,201.91 - Step 4: Simplify right side
112,645.24x = 13,367,798,164.21 - Step 5: Solve for x
x = 13,367,798,164.21/112,645.24 - Step 6: Final answer
x = 118,671.67
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.