Finding the Fourth Proportional to 130,790.97, 180,486.23 and 74,201.13
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Solution
The fourth proportional to 130,790.97, 180,486.23 and 74,201.13 is: 102,394.54
Step by Step Solution
- Step 1: Write the proportion equation
130,790.97 : 180,486.23 = 74,201.13 : x - Step 2: Convert to fraction form
130,790.97/180,486.23 = 74,201.13/x - Step 3: Cross multiply
130,790.97x = 180,486.23 × 74,201.13 - Step 4: Simplify right side
130,790.97x = 13,392,281,844.43 - Step 5: Solve for x
x = 13,392,281,844.43/130,790.97 - Step 6: Final answer
x = 102,394.54
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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.