Finding the Fourth Proportional to 143,405.44, 197,818.80 and 86,029.49
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Solution
The fourth proportional to 143,405.44, 197,818.80 and 86,029.49 is: 118,672.28
Step by Step Solution
- Step 1: Write the proportion equation
143,405.44 : 197,818.80 = 86,029.49 : x - Step 2: Convert to fraction form
143,405.44/197,818.80 = 86,029.49/x - Step 3: Cross multiply
143,405.44x = 197,818.80 × 86,029.49 - Step 4: Simplify right side
143,405.44x = 17,018,250,476.41 - Step 5: Solve for x
x = 17,018,250,476.41/143,405.44 - Step 6: Final answer
x = 118,672.28
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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.