Finding the Fourth Proportional to 97,927.75, 135,181.64 and 66,139.70
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Solution
The fourth proportional to 97,927.75, 135,181.64 and 66,139.70 is: 91,300.71
Step by Step Solution
- Step 1: Write the proportion equation
97,927.75 : 135,181.64 = 66,139.70 : x - Step 2: Convert to fraction form
97,927.75/135,181.64 = 66,139.70/x - Step 3: Cross multiply
97,927.75x = 135,181.64 × 66,139.70 - Step 4: Simplify right side
97,927.75x = 8,940,873,122.36 - Step 5: Solve for x
x = 8,940,873,122.36/97,927.75 - Step 6: Final answer
x = 91,300.71
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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.