Finding the Fourth Proportional to 128,795.58, 193,248.99 and 69,672.87
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Solution
The fourth proportional to 128,795.58, 193,248.99 and 69,672.87 is: 104,539.39
Step by Step Solution
- Step 1: Write the proportion equation
128,795.58 : 193,248.99 = 69,672.87 : x - Step 2: Convert to fraction form
128,795.58/193,248.99 = 69,672.87/x - Step 3: Cross multiply
128,795.58x = 193,248.99 × 69,672.87 - Step 4: Simplify right side
128,795.58x = 13,464,211,757.90 - Step 5: Solve for x
x = 13,464,211,757.90/128,795.58 - Step 6: Final answer
x = 104,539.39
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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.