Finding the Fourth Proportional to 100,370.13, 138,497.93 and 57,352.36
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Solution
The fourth proportional to 100,370.13, 138,497.93 and 57,352.36 is: 79,138.91
Step by Step Solution
- Step 1: Write the proportion equation
100,370.13 : 138,497.93 = 57,352.36 : x - Step 2: Convert to fraction form
100,370.13/138,497.93 = 57,352.36/x - Step 3: Cross multiply
100,370.13x = 138,497.93 × 57,352.36 - Step 4: Simplify right side
100,370.13x = 7,943,182,448.13 - Step 5: Solve for x
x = 7,943,182,448.13/100,370.13 - Step 6: Final answer
x = 79,138.91
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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.