Finding the Fourth Proportional to 143,386.74, 197,869.84 and 79,726.82
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Solution
The fourth proportional to 143,386.74, 197,869.84 and 79,726.82 is: 110,020.86
Step by Step Solution
- Step 1: Write the proportion equation
143,386.74 : 197,869.84 = 79,726.82 : x - Step 2: Convert to fraction form
143,386.74/197,869.84 = 79,726.82/x - Step 3: Cross multiply
143,386.74x = 197,869.84 × 79,726.82 - Step 4: Simplify right side
143,386.74x = 15,775,531,928.44 - Step 5: Solve for x
x = 15,775,531,928.44/143,386.74 - Step 6: Final answer
x = 110,020.86
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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.