Finding the Fourth Proportional to 124,785.64, 172,203.80 and 68,197.02
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Solution
The fourth proportional to 124,785.64, 172,203.80 and 68,197.02 is: 94,111.68
Step by Step Solution
- Step 1: Write the proportion equation
124,785.64 : 172,203.80 = 68,197.02 : x - Step 2: Convert to fraction form
124,785.64/172,203.80 = 68,197.02/x - Step 3: Cross multiply
124,785.64x = 172,203.80 × 68,197.02 - Step 4: Simplify right side
124,785.64x = 11,743,785,992.68 - Step 5: Solve for x
x = 11,743,785,992.68/124,785.64 - Step 6: Final answer
x = 94,111.68
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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.