Finding the Fourth Proportional to 147,040.20, 202,909.62 and 79,972.20
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Solution
The fourth proportional to 147,040.20, 202,909.62 and 79,972.20 is: 110,358.45
Step by Step Solution
- Step 1: Write the proportion equation
147,040.20 : 202,909.62 = 79,972.20 : x - Step 2: Convert to fraction form
147,040.20/202,909.62 = 79,972.20/x - Step 3: Cross multiply
147,040.20x = 202,909.62 × 79,972.20 - Step 4: Simplify right side
147,040.20x = 16,227,128,712.56 - Step 5: Solve for x
x = 16,227,128,712.56/147,040.20 - Step 6: Final answer
x = 110,358.45
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1.5x scale
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.