Finding the Fourth Proportional to 128,474.31, 177,177.41 and 110,319.33
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Solution
The fourth proportional to 128,474.31, 177,177.41 and 110,319.33 is: 152,140.08
Step by Step Solution
- Step 1: Write the proportion equation
128,474.31 : 177,177.41 = 110,319.33 : x - Step 2: Convert to fraction form
128,474.31/177,177.41 = 110,319.33/x - Step 3: Cross multiply
128,474.31x = 177,177.41 × 110,319.33 - Step 4: Simplify right side
128,474.31x = 19,546,092,692.23 - Step 5: Solve for x
x = 19,546,092,692.23/128,474.31 - Step 6: Final answer
x = 152,140.08
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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.