Finding the Fourth Proportional to 208,106.10, 312,101.55 and 83,459.70
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Solution
The fourth proportional to 208,106.10, 312,101.55 and 83,459.70 is: 125,166.45
Step by Step Solution
- Step 1: Write the proportion equation
208,106.10 : 312,101.55 = 83,459.70 : x - Step 2: Convert to fraction form
208,106.10/312,101.55 = 83,459.70/x - Step 3: Cross multiply
208,106.10x = 312,101.55 × 83,459.70 - Step 4: Simplify right side
208,106.10x = 26,047,901,732.54 - Step 5: Solve for x
x = 26,047,901,732.54/208,106.10 - Step 6: Final answer
x = 125,166.45
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.