Finding the Fourth Proportional to 142,780.56, 197,026.34 and 79,116.99
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Solution
The fourth proportional to 142,780.56, 197,026.34 and 79,116.99 is: 109,175.44
Step by Step Solution
- Step 1: Write the proportion equation
142,780.56 : 197,026.34 = 79,116.99 : x - Step 2: Convert to fraction form
142,780.56/197,026.34 = 79,116.99/x - Step 3: Cross multiply
142,780.56x = 197,026.34 × 79,116.99 - Step 4: Simplify right side
142,780.56x = 15,588,130,575.93 - Step 5: Solve for x
x = 15,588,130,575.93/142,780.56 - Step 6: Final answer
x = 109,175.44
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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.