Finding the Fourth Proportional to 128,919.36, 193,374.18 and 35,422.68
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Solution
The fourth proportional to 128,919.36, 193,374.18 and 35,422.68 is: 53,132.68
Step by Step Solution
- Step 1: Write the proportion equation
128,919.36 : 193,374.18 = 35,422.68 : x - Step 2: Convert to fraction form
128,919.36/193,374.18 = 35,422.68/x - Step 3: Cross multiply
128,919.36x = 193,374.18 × 35,422.68 - Step 4: Simplify right side
128,919.36x = 6,849,831,698.40 - Step 5: Solve for x
x = 6,849,831,698.40/128,919.36 - Step 6: Final answer
x = 53,132.68
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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.