Finding the Fourth Proportional to 99,497.81, 137,309.59 and 54,177.70
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Solution
The fourth proportional to 99,497.81, 137,309.59 and 54,177.70 is: 74,766.65
Step by Step Solution
- Step 1: Write the proportion equation
99,497.81 : 137,309.59 = 54,177.70 : x - Step 2: Convert to fraction form
99,497.81/137,309.59 = 54,177.70/x - Step 3: Cross multiply
99,497.81x = 137,309.59 × 54,177.70 - Step 4: Simplify right side
99,497.81x = 7,439,117,774.14 - Step 5: Solve for x
x = 7,439,117,774.14/99,497.81 - Step 6: Final answer
x = 74,766.65
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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.