Finding the Fourth Proportional to 103,637.19, 155,459.12 and 28,758.09
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Solution
The fourth proportional to 103,637.19, 155,459.12 and 28,758.09 is: 43,138.06
Step by Step Solution
- Step 1: Write the proportion equation
103,637.19 : 155,459.12 = 28,758.09 : x - Step 2: Convert to fraction form
103,637.19/155,459.12 = 28,758.09/x - Step 3: Cross multiply
103,637.19x = 155,459.12 × 28,758.09 - Step 4: Simplify right side
103,637.19x = 4,470,707,364.28 - Step 5: Solve for x
x = 4,470,707,364.28/103,637.19 - Step 6: Final answer
x = 43,138.06
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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.