Finding the Fourth Proportional to 143,318.08, 197,756.48 and 79,655.68
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Solution
The fourth proportional to 143,318.08, 197,756.48 and 79,655.68 is: 109,912.35
Step by Step Solution
- Step 1: Write the proportion equation
143,318.08 : 197,756.48 = 79,655.68 : x - Step 2: Convert to fraction form
143,318.08/197,756.48 = 79,655.68/x - Step 3: Cross multiply
143,318.08x = 197,756.48 × 79,655.68 - Step 4: Simplify right side
143,318.08x = 15,752,426,888.81 - Step 5: Solve for x
x = 15,752,426,888.81/143,318.08 - Step 6: Final answer
x = 109,912.35
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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.