Finding the Fourth Proportional to 121,438.76, 180,937.17 and 114,648.13
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Solution
The fourth proportional to 121,438.76, 180,937.17 and 114,648.13 is: 170,819.49
Step by Step Solution
- Step 1: Write the proportion equation
121,438.76 : 180,937.17 = 114,648.13 : x - Step 2: Convert to fraction form
121,438.76/180,937.17 = 114,648.13/x - Step 3: Cross multiply
121,438.76x = 180,937.17 × 114,648.13 - Step 4: Simplify right side
121,438.76x = 20,744,107,283.31 - Step 5: Solve for x
x = 20,744,107,283.31/121,438.76 - Step 6: Final answer
x = 170,819.49
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.