Finding the Fourth Proportional to 121,094.20, 181,641.30 and 106,319.80
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Solution
The fourth proportional to 121,094.20, 181,641.30 and 106,319.80 is: 159,479.70
Step by Step Solution
- Step 1: Write the proportion equation
121,094.20 : 181,641.30 = 106,319.80 : x - Step 2: Convert to fraction form
121,094.20/181,641.30 = 106,319.80/x - Step 3: Cross multiply
121,094.20x = 181,641.30 × 106,319.80 - Step 4: Simplify right side
121,094.20x = 19,312,066,687.74 - Step 5: Solve for x
x = 19,312,066,687.74/121,094.20 - Step 6: Final answer
x = 159,479.70
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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.