Finding the Fourth Proportional to 124,708.96, 172,102.08 and 68,121.28
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Solution
The fourth proportional to 124,708.96, 172,102.08 and 68,121.28 is: 94,009.40
Step by Step Solution
- Step 1: Write the proportion equation
124,708.96 : 172,102.08 = 68,121.28 : x - Step 2: Convert to fraction form
124,708.96/172,102.08 = 68,121.28/x - Step 3: Cross multiply
124,708.96x = 172,102.08 × 68,121.28 - Step 4: Simplify right side
124,708.96x = 11,723,813,980.26 - Step 5: Solve for x
x = 11,723,813,980.26/124,708.96 - Step 6: Final answer
x = 94,009.40
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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.