Finding the Fourth Proportional to 142,985.01, 197,342.97 and 79,343.31
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Solution
The fourth proportional to 142,985.01, 197,342.97 and 79,343.31 is: 109,506.89
Step by Step Solution
- Step 1: Write the proportion equation
142,985.01 : 197,342.97 = 79,343.31 : x - Step 2: Convert to fraction form
142,985.01/197,342.97 = 79,343.31/x - Step 3: Cross multiply
142,985.01x = 197,342.97 × 79,343.31 - Step 4: Simplify right side
142,985.01x = 15,657,844,445.03 - Step 5: Solve for x
x = 15,657,844,445.03/142,985.01 - Step 6: Final answer
x = 109,506.89
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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.