Finding the Fourth Proportional to 128,675.36, 193,038.80 and 44,438.60
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Solution
The fourth proportional to 128,675.36, 193,038.80 and 44,438.60 is: 66,666.80
Step by Step Solution
- Step 1: Write the proportion equation
128,675.36 : 193,038.80 = 44,438.60 : x - Step 2: Convert to fraction form
128,675.36/193,038.80 = 44,438.60/x - Step 3: Cross multiply
128,675.36x = 193,038.80 × 44,438.60 - Step 4: Simplify right side
128,675.36x = 8,578,374,017.68 - Step 5: Solve for x
x = 8,578,374,017.68/128,675.36 - Step 6: Final answer
x = 66,666.80
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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.