Finding the Fourth Proportional to 143,023.75, 197,372.78 and 79,371.79
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Solution
The fourth proportional to 143,023.75, 197,372.78 and 79,371.79 is: 109,533.07
Step by Step Solution
- Step 1: Write the proportion equation
143,023.75 : 197,372.78 = 79,371.79 : x - Step 2: Convert to fraction form
143,023.75/197,372.78 = 79,371.79/x - Step 3: Cross multiply
143,023.75x = 197,372.78 × 79,371.79 - Step 4: Simplify right side
143,023.75x = 15,665,830,845.88 - Step 5: Solve for x
x = 15,665,830,845.88/143,023.75 - Step 6: Final answer
x = 109,533.07
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.