Finding the Fourth Proportional to 128,187.36, 192,306.56 and 39,437.48
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Solution
The fourth proportional to 128,187.36, 192,306.56 and 39,437.48 is: 59,164.07
Step by Step Solution
- Step 1: Write the proportion equation
128,187.36 : 192,306.56 = 39,437.48 : x - Step 2: Convert to fraction form
128,187.36/192,306.56 = 39,437.48/x - Step 3: Cross multiply
128,187.36x = 192,306.56 × 39,437.48 - Step 4: Simplify right side
128,187.36x = 7,584,086,397.45 - Step 5: Solve for x
x = 7,584,086,397.45/128,187.36 - Step 6: Final answer
x = 59,164.07
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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.