Finding the Fourth Proportional to 83,974.16, 125,346.86 and 74,009.99
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Solution
The fourth proportional to 83,974.16, 125,346.86 and 74,009.99 is: 110,473.50
Step by Step Solution
- Step 1: Write the proportion equation
83,974.16 : 125,346.86 = 74,009.99 : x - Step 2: Convert to fraction form
83,974.16/125,346.86 = 74,009.99/x - Step 3: Cross multiply
83,974.16x = 125,346.86 × 74,009.99 - Step 4: Simplify right side
83,974.16x = 9,276,918,858.35 - Step 5: Solve for x
x = 9,276,918,858.35/83,974.16 - Step 6: Final answer
x = 110,473.50
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.