Finding the Fourth Proportional to 213,065.23, 319,719.95 and 86,682.14
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Solution
The fourth proportional to 213,065.23, 319,719.95 and 86,682.14 is: 130,072.89
Step by Step Solution
- Step 1: Write the proportion equation
213,065.23 : 319,719.95 = 86,682.14 : x - Step 2: Convert to fraction form
213,065.23/319,719.95 = 86,682.14/x - Step 3: Cross multiply
213,065.23x = 319,719.95 × 86,682.14 - Step 4: Simplify right side
213,065.23x = 27,714,009,466.69 - Step 5: Solve for x
x = 27,714,009,466.69/213,065.23 - Step 6: Final answer
x = 130,072.89
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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.