Finding the Fourth Proportional to 135,787.16, 187,408.80 and 79,198.53
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Solution
The fourth proportional to 135,787.16, 187,408.80 and 79,198.53 is: 109,307.11
Step by Step Solution
- Step 1: Write the proportion equation
135,787.16 : 187,408.80 = 79,198.53 : x - Step 2: Convert to fraction form
135,787.16/187,408.80 = 79,198.53/x - Step 3: Cross multiply
135,787.16x = 187,408.80 × 79,198.53 - Step 4: Simplify right side
135,787.16x = 14,842,501,469.06 - Step 5: Solve for x
x = 14,842,501,469.06/135,787.16 - Step 6: Final answer
x = 109,307.11
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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.