Finding the Fourth Proportional to 136,154.08, 187,890.96 and 76,538.08
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Solution
The fourth proportional to 136,154.08, 187,890.96 and 76,538.08 is: 105,621.61
Step by Step Solution
- Step 1: Write the proportion equation
136,154.08 : 187,890.96 = 76,538.08 : x - Step 2: Convert to fraction form
136,154.08/187,890.96 = 76,538.08/x - Step 3: Cross multiply
136,154.08x = 187,890.96 × 76,538.08 - Step 4: Simplify right side
136,154.08x = 14,380,813,327.76 - Step 5: Solve for x
x = 14,380,813,327.76/136,154.08 - Step 6: Final answer
x = 105,621.61
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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.