Finding the Fourth Proportional to 133,205.42, 183,823.64 and 72,777.08
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Solution
The fourth proportional to 133,205.42, 183,823.64 and 72,777.08 is: 100,432.46
Step by Step Solution
- Step 1: Write the proportion equation
133,205.42 : 183,823.64 = 72,777.08 : x - Step 2: Convert to fraction form
133,205.42/183,823.64 = 72,777.08/x - Step 3: Cross multiply
133,205.42x = 183,823.64 × 72,777.08 - Step 4: Simplify right side
133,205.42x = 13,378,147,390.29 - Step 5: Solve for x
x = 13,378,147,390.29/133,205.42 - Step 6: Final answer
x = 100,432.46
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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.