Finding the Fourth Proportional to 135,395.76, 186,851.99 and 74,966.40
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Solution
The fourth proportional to 135,395.76, 186,851.99 and 74,966.40 is: 103,456.86
Step by Step Solution
- Step 1: Write the proportion equation
135,395.76 : 186,851.99 = 74,966.40 : x - Step 2: Convert to fraction form
135,395.76/186,851.99 = 74,966.40/x - Step 3: Cross multiply
135,395.76x = 186,851.99 × 74,966.40 - Step 4: Simplify right side
135,395.76x = 14,007,620,648.30 - Step 5: Solve for x
x = 14,007,620,648.30/135,395.76 - Step 6: Final answer
x = 103,456.86
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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.