Finding the Fourth Proportional to 119,370.68, 164,701.72 and 76,878.08
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Solution
The fourth proportional to 119,370.68, 164,701.72 and 76,878.08 is: 106,072.55
Step by Step Solution
- Step 1: Write the proportion equation
119,370.68 : 164,701.72 = 76,878.08 : x - Step 2: Convert to fraction form
119,370.68/164,701.72 = 76,878.08/x - Step 3: Cross multiply
119,370.68x = 164,701.72 × 76,878.08 - Step 4: Simplify right side
119,370.68x = 12,661,952,006.30 - Step 5: Solve for x
x = 12,661,952,006.30/119,370.68 - Step 6: Final answer
x = 106,072.55
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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.