Finding the Fourth Proportional to 100,506.36, 138,670.47 and 64,717.08
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Solution
The fourth proportional to 100,506.36, 138,670.47 and 64,717.08 is: 89,291.34
Step by Step Solution
- Step 1: Write the proportion equation
100,506.36 : 138,670.47 = 64,717.08 : x - Step 2: Convert to fraction form
100,506.36/138,670.47 = 64,717.08/x - Step 3: Cross multiply
100,506.36x = 138,670.47 × 64,717.08 - Step 4: Simplify right side
100,506.36x = 8,974,347,900.63 - Step 5: Solve for x
x = 8,974,347,900.63/100,506.36 - Step 6: Final answer
x = 89,291.34
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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.