Finding the Fourth Proportional to 103,950.41, 155,173.67 and 91,339.09
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Solution
The fourth proportional to 103,950.41, 155,173.67 and 91,339.09 is: 136,347.92
Step by Step Solution
- Step 1: Write the proportion equation
103,950.41 : 155,173.67 = 91,339.09 : x - Step 2: Convert to fraction form
103,950.41/155,173.67 = 91,339.09/x - Step 3: Cross multiply
103,950.41x = 155,173.67 × 91,339.09 - Step 4: Simplify right side
103,950.41x = 14,173,421,809.76 - Step 5: Solve for x
x = 14,173,421,809.76/103,950.41 - Step 6: Final answer
x = 136,347.92
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.