Finding the Fourth Proportional to 207,947.80, 312,029.70 and 97,139.80
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Solution
The fourth proportional to 207,947.80, 312,029.70 and 97,139.80 is: 145,760.15
Step by Step Solution
- Step 1: Write the proportion equation
207,947.80 : 312,029.70 = 97,139.80 : x - Step 2: Convert to fraction form
207,947.80/312,029.70 = 97,139.80/x - Step 3: Cross multiply
207,947.80x = 312,029.70 × 97,139.80 - Step 4: Simplify right side
207,947.80x = 30,310,502,652.06 - Step 5: Solve for x
x = 30,310,502,652.06/207,947.80 - Step 6: Final answer
x = 145,760.15
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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.