Finding the Fourth Proportional to 212,815.84, 293,685.86 and 122,177.68
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Solution
The fourth proportional to 212,815.84, 293,685.86 and 122,177.68 is: 168,605.20
Step by Step Solution
- Step 1: Write the proportion equation
212,815.84 : 293,685.86 = 122,177.68 : x - Step 2: Convert to fraction form
212,815.84/293,685.86 = 122,177.68/x - Step 3: Cross multiply
212,815.84x = 293,685.86 × 122,177.68 - Step 4: Simplify right side
212,815.84x = 35,881,857,023.60 - Step 5: Solve for x
x = 35,881,857,023.60/212,815.84 - Step 6: Final answer
x = 168,605.20
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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.