Finding the Fourth Proportional to 136,328.60, 188,128.86 and 76,701.08
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Solution
The fourth proportional to 136,328.60, 188,128.86 and 76,701.08 is: 105,844.90
Step by Step Solution
- Step 1: Write the proportion equation
136,328.60 : 188,128.86 = 76,701.08 : x - Step 2: Convert to fraction form
136,328.60/188,128.86 = 76,701.08/x - Step 3: Cross multiply
136,328.60x = 188,128.86 × 76,701.08 - Step 4: Simplify right side
136,328.60x = 14,429,686,741.17 - Step 5: Solve for x
x = 14,429,686,741.17/136,328.60 - Step 6: Final answer
x = 105,844.90
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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.