Finding the Fourth Proportional to 135,985.14, 203,681.79 and 65,716.50
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Solution
The fourth proportional to 135,985.14, 203,681.79 and 65,716.50 is: 98,431.74
Step by Step Solution
- Step 1: Write the proportion equation
135,985.14 : 203,681.79 = 65,716.50 : x - Step 2: Convert to fraction form
135,985.14/203,681.79 = 65,716.50/x - Step 3: Cross multiply
135,985.14x = 203,681.79 × 65,716.50 - Step 4: Simplify right side
135,985.14x = 13,385,254,352.54 - Step 5: Solve for x
x = 13,385,254,352.54/135,985.14 - Step 6: Final answer
x = 98,431.74
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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.