Finding the Fourth Proportional to 121,278.87, 181,943.51 and 51,158.79
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Solution
The fourth proportional to 121,278.87, 181,943.51 and 51,158.79 is: 76,748.82
Step by Step Solution
- Step 1: Write the proportion equation
121,278.87 : 181,943.51 = 51,158.79 : x - Step 2: Convert to fraction form
121,278.87/181,943.51 = 51,158.79/x - Step 3: Cross multiply
121,278.87x = 181,943.51 × 51,158.79 - Step 4: Simplify right side
121,278.87x = 9,308,009,564.16 - Step 5: Solve for x
x = 9,308,009,564.16/121,278.87 - Step 6: Final answer
x = 76,748.82
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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.