Finding the Fourth Proportional to 143,034.99, 197,390.79 and 78,510.26
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Solution
The fourth proportional to 143,034.99, 197,390.79 and 78,510.26 is: 108,345.53
Step by Step Solution
- Step 1: Write the proportion equation
143,034.99 : 197,390.79 = 78,510.26 : x - Step 2: Convert to fraction form
143,034.99/197,390.79 = 78,510.26/x - Step 3: Cross multiply
143,034.99x = 197,390.79 × 78,510.26 - Step 4: Simplify right side
143,034.99x = 15,497,201,851.95 - Step 5: Solve for x
x = 15,497,201,851.95/143,034.99 - Step 6: Final answer
x = 108,345.53
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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.