Finding the Fourth Proportional to 128,865.08, 193,372.94 and 53,978.86
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Solution
The fourth proportional to 128,865.08, 193,372.94 and 53,978.86 is: 80,999.84
Step by Step Solution
- Step 1: Write the proportion equation
128,865.08 : 193,372.94 = 53,978.86 : x - Step 2: Convert to fraction form
128,865.08/193,372.94 = 53,978.86/x - Step 3: Cross multiply
128,865.08x = 193,372.94 × 53,978.86 - Step 4: Simplify right side
128,865.08x = 10,438,050,856.05 - Step 5: Solve for x
x = 10,438,050,856.05/128,865.08 - Step 6: Final answer
x = 80,999.84
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.