Finding the Fourth Proportional to 121,029.20, 181,325.10 and 98,721.80
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Solution
The fourth proportional to 121,029.20, 181,325.10 and 98,721.80 is: 147,904.31
Step by Step Solution
- Step 1: Write the proportion equation
121,029.20 : 181,325.10 = 98,721.80 : x - Step 2: Convert to fraction form
121,029.20/181,325.10 = 98,721.80/x - Step 3: Cross multiply
121,029.20x = 181,325.10 × 98,721.80 - Step 4: Simplify right side
121,029.20x = 17,900,740,257.18 - Step 5: Solve for x
x = 17,900,740,257.18/121,029.20 - Step 6: Final answer
x = 147,904.31
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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.