Finding the Fourth Proportional to 121,201.70, 181,802.55 and 47,329.70
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Solution
The fourth proportional to 121,201.70, 181,802.55 and 47,329.70 is: 70,994.55
Step by Step Solution
- Step 1: Write the proportion equation
121,201.70 : 181,802.55 = 47,329.70 : x - Step 2: Convert to fraction form
121,201.70/181,802.55 = 47,329.70/x - Step 3: Cross multiply
121,201.70x = 181,802.55 × 47,329.70 - Step 4: Simplify right side
121,201.70x = 8,604,660,150.74 - Step 5: Solve for x
x = 8,604,660,150.74/121,201.70 - Step 6: Final answer
x = 70,994.55
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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.