Finding the Fourth Proportional to 135,857.53, 187,485.60 and 75,432.07
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Solution
The fourth proportional to 135,857.53, 187,485.60 and 75,432.07 is: 104,097.48
Step by Step Solution
- Step 1: Write the proportion equation
135,857.53 : 187,485.60 = 75,432.07 : x - Step 2: Convert to fraction form
135,857.53/187,485.60 = 75,432.07/x - Step 3: Cross multiply
135,857.53x = 187,485.60 × 75,432.07 - Step 4: Simplify right side
135,857.53x = 14,142,426,903.19 - Step 5: Solve for x
x = 14,142,426,903.19/135,857.53 - Step 6: Final answer
x = 104,097.48
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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.