Finding the Fourth Proportional to 140,373.76, 193,920.66 and 121,478.08
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Solution
The fourth proportional to 140,373.76, 193,920.66 and 121,478.08 is: 167,817.04
Step by Step Solution
- Step 1: Write the proportion equation
140,373.76 : 193,920.66 = 121,478.08 : x - Step 2: Convert to fraction form
140,373.76/193,920.66 = 121,478.08/x - Step 3: Cross multiply
140,373.76x = 193,920.66 × 121,478.08 - Step 4: Simplify right side
140,373.76x = 23,557,109,449.13 - Step 5: Solve for x
x = 23,557,109,449.13/140,373.76 - Step 6: Final answer
x = 167,817.04
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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.