Finding the Fourth Proportional to 143,630.98, 198,214.23 and 79,973.08
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Solution
The fourth proportional to 143,630.98, 198,214.23 and 79,973.08 is: 110,364.79
Step by Step Solution
- Step 1: Write the proportion equation
143,630.98 : 198,214.23 = 79,973.08 : x - Step 2: Convert to fraction form
143,630.98/198,214.23 = 79,973.08/x - Step 3: Cross multiply
143,630.98x = 198,214.23 × 79,973.08 - Step 4: Simplify right side
143,630.98x = 15,851,802,472.93 - Step 5: Solve for x
x = 15,851,802,472.93/143,630.98 - Step 6: Final answer
x = 110,364.79
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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.