Finding the Fourth Proportional to 128,788.16, 193,179.36 and 58,686.08
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Solution
The fourth proportional to 128,788.16, 193,179.36 and 58,686.08 is: 88,027.81
Step by Step Solution
- Step 1: Write the proportion equation
128,788.16 : 193,179.36 = 58,686.08 : x - Step 2: Convert to fraction form
128,788.16/193,179.36 = 58,686.08/x - Step 3: Cross multiply
128,788.16x = 193,179.36 × 58,686.08 - Step 4: Simplify right side
128,788.16x = 11,336,939,375.31 - Step 5: Solve for x
x = 11,336,939,375.31/128,788.16 - Step 6: Final answer
x = 88,027.81
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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.