Finding the Fourth Proportional to 121,064.13, 181,597.10 and 42,178.23
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Solution
The fourth proportional to 121,064.13, 181,597.10 and 42,178.23 is: 63,267.66
Step by Step Solution
- Step 1: Write the proportion equation
121,064.13 : 181,597.10 = 42,178.23 : x - Step 2: Convert to fraction form
121,064.13/181,597.10 = 42,178.23/x - Step 3: Cross multiply
121,064.13x = 181,597.10 × 42,178.23 - Step 4: Simplify right side
121,064.13x = 7,659,444,251.13 - Step 5: Solve for x
x = 7,659,444,251.13/121,064.13 - Step 6: Final answer
x = 63,267.66
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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.