Finding the Fourth Proportional to 135,014.19, 186,321.14 and 74,583.57
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Solution
The fourth proportional to 135,014.19, 186,321.14 and 74,583.57 is: 102,926.19
Step by Step Solution
- Step 1: Write the proportion equation
135,014.19 : 186,321.14 = 74,583.57 : x - Step 2: Convert to fraction form
135,014.19/186,321.14 = 74,583.57/x - Step 3: Cross multiply
135,014.19x = 186,321.14 × 74,583.57 - Step 4: Simplify right side
135,014.19x = 13,896,495,974.13 - Step 5: Solve for x
x = 13,896,495,974.13/135,014.19 - Step 6: Final answer
x = 102,926.19
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1.5x scale
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.