Finding the Fourth Proportional to 160,871.74, 221,980.71 and 107,191.42
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Solution
The fourth proportional to 160,871.74, 221,980.71 and 107,191.42 is: 147,909.31
Step by Step Solution
- Step 1: Write the proportion equation
160,871.74 : 221,980.71 = 107,191.42 : x - Step 2: Convert to fraction form
160,871.74/221,980.71 = 107,191.42/x - Step 3: Cross multiply
160,871.74x = 221,980.71 × 107,191.42 - Step 4: Simplify right side
160,871.74x = 23,794,427,517.51 - Step 5: Solve for x
x = 23,794,427,517.51/160,871.74 - Step 6: Final answer
x = 147,909.31
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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.