Finding the Fourth Proportional to 135,386.93, 186,840.84 and 74,964.21
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Solution
The fourth proportional to 135,386.93, 186,840.84 and 74,964.21 is: 103,454.42
Step by Step Solution
- Step 1: Write the proportion equation
135,386.93 : 186,840.84 = 74,964.21 : x - Step 2: Convert to fraction form
135,386.93/186,840.84 = 74,964.21/x - Step 3: Cross multiply
135,386.93x = 186,840.84 × 74,964.21 - Step 4: Simplify right side
135,386.93x = 14,006,375,966.34 - Step 5: Solve for x
x = 14,006,375,966.34/135,386.93 - Step 6: Final answer
x = 103,454.42
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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.