Finding the Fourth Proportional to 135,968.10, 203,952.15 and 85,885.80
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Solution
The fourth proportional to 135,968.10, 203,952.15 and 85,885.80 is: 128,828.70
Step by Step Solution
- Step 1: Write the proportion equation
135,968.10 : 203,952.15 = 85,885.80 : x - Step 2: Convert to fraction form
135,968.10/203,952.15 = 85,885.80/x - Step 3: Cross multiply
135,968.10x = 203,952.15 × 85,885.80 - Step 4: Simplify right side
135,968.10x = 17,516,593,564.47 - Step 5: Solve for x
x = 17,516,593,564.47/135,968.10 - Step 6: Final answer
x = 128,828.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.