Finding the Fourth Proportional to 128,352.51, 192,368.25 and 61,774.83
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Solution
The fourth proportional to 128,352.51, 192,368.25 and 61,774.83 is: 92,584.99
Step by Step Solution
- Step 1: Write the proportion equation
128,352.51 : 192,368.25 = 61,774.83 : x - Step 2: Convert to fraction form
128,352.51/192,368.25 = 61,774.83/x - Step 3: Cross multiply
128,352.51x = 192,368.25 × 61,774.83 - Step 4: Simplify right side
128,352.51x = 11,883,515,941.15 - Step 5: Solve for x
x = 11,883,515,941.15/128,352.51 - Step 6: Final answer
x = 92,584.99
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1.5x scale
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.