Finding the Fourth Proportional to 121,207.20, 181,810.80 and 38,101.20
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Solution
The fourth proportional to 121,207.20, 181,810.80 and 38,101.20 is: 57,151.80
Step by Step Solution
- Step 1: Write the proportion equation
121,207.20 : 181,810.80 = 38,101.20 : x - Step 2: Convert to fraction form
121,207.20/181,810.80 = 38,101.20/x - Step 3: Cross multiply
121,207.20x = 181,810.80 × 38,101.20 - Step 4: Simplify right side
121,207.20x = 6,927,209,652.96 - Step 5: Solve for x
x = 6,927,209,652.96/121,207.20 - Step 6: Final answer
x = 57,151.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.