Finding the Fourth Proportional to 125,268.21, 172,869.86 and 68,679.59
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Solution
The fourth proportional to 125,268.21, 172,869.86 and 68,679.59 is: 94,777.68
Step by Step Solution
- Step 1: Write the proportion equation
125,268.21 : 172,869.86 = 68,679.59 : x - Step 2: Convert to fraction form
125,268.21/172,869.86 = 68,679.59/x - Step 3: Cross multiply
125,268.21x = 172,869.86 × 68,679.59 - Step 4: Simplify right side
125,268.21x = 11,872,630,415.51 - Step 5: Solve for x
x = 11,872,630,415.51/125,268.21 - Step 6: Final answer
x = 94,777.68
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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.