Finding the Fourth Proportional to 128,454.41, 177,267.39 and 71,097.65
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Solution
The fourth proportional to 128,454.41, 177,267.39 and 71,097.65 is: 98,114.92
Step by Step Solution
- Step 1: Write the proportion equation
128,454.41 : 177,267.39 = 71,097.65 : x - Step 2: Convert to fraction form
128,454.41/177,267.39 = 71,097.65/x - Step 3: Cross multiply
128,454.41x = 177,267.39 × 71,097.65 - Step 4: Simplify right side
128,454.41x = 12,603,294,362.43 - Step 5: Solve for x
x = 12,603,294,362.43/128,454.41 - Step 6: Final answer
x = 98,114.92
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.