Finding the Fourth Proportional to 142,794.99, 197,059.62 and 78,259.95
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Solution
The fourth proportional to 142,794.99, 197,059.62 and 78,259.95 is: 108,000.12
Step by Step Solution
- Step 1: Write the proportion equation
142,794.99 : 197,059.62 = 78,259.95 : x - Step 2: Convert to fraction form
142,794.99/197,059.62 = 78,259.95/x - Step 3: Cross multiply
142,794.99x = 197,059.62 × 78,259.95 - Step 4: Simplify right side
142,794.99x = 15,421,876,008.22 - Step 5: Solve for x
x = 15,421,876,008.22/142,794.99 - Step 6: Final answer
x = 108,000.12
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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.