Finding the Fourth Proportional to 140,372.76, 193,919.28 and 121,477.08
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Solution
The fourth proportional to 140,372.76, 193,919.28 and 121,477.08 is: 167,815.66
Step by Step Solution
- Step 1: Write the proportion equation
140,372.76 : 193,919.28 = 121,477.08 : x - Step 2: Convert to fraction form
140,372.76/193,919.28 = 121,477.08/x - Step 3: Cross multiply
140,372.76x = 193,919.28 × 121,477.08 - Step 4: Simplify right side
140,372.76x = 23,556,747,890.10 - Step 5: Solve for x
x = 23,556,747,890.10/140,372.76 - Step 6: Final answer
x = 167,815.66
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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.