Finding the Fourth Proportional to 143,567.75, 198,119.99 and 79,036.46
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Solution
The fourth proportional to 143,567.75, 198,119.99 and 79,036.46 is: 109,068.39
Step by Step Solution
- Step 1: Write the proportion equation
143,567.75 : 198,119.99 = 79,036.46 : x - Step 2: Convert to fraction form
143,567.75/198,119.99 = 79,036.46/x - Step 3: Cross multiply
143,567.75x = 198,119.99 × 79,036.46 - Step 4: Simplify right side
143,567.75x = 15,658,703,228.31 - Step 5: Solve for x
x = 15,658,703,228.31/143,567.75 - Step 6: Final answer
x = 109,068.39
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1.5x scale
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.