Finding the Fourth Proportional to 143,053.68, 197,410.32 and 79,389.84
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Solution
The fourth proportional to 143,053.68, 197,410.32 and 79,389.84 is: 109,555.89
Step by Step Solution
- Step 1: Write the proportion equation
143,053.68 : 197,410.32 = 79,389.84 : x - Step 2: Convert to fraction form
143,053.68/197,410.32 = 79,389.84/x - Step 3: Cross multiply
143,053.68x = 197,410.32 × 79,389.84 - Step 4: Simplify right side
143,053.68x = 15,672,373,719.15 - Step 5: Solve for x
x = 15,672,373,719.15/143,053.68 - Step 6: Final answer
x = 109,555.89
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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.