Finding the Fourth Proportional to 143,985.22, 198,697.99 and 79,454.95
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Solution
The fourth proportional to 143,985.22, 198,697.99 and 79,454.95 is: 109,646.94
Step by Step Solution
- Step 1: Write the proportion equation
143,985.22 : 198,697.99 = 79,454.95 : x - Step 2: Convert to fraction form
143,985.22/198,697.99 = 79,454.95/x - Step 3: Cross multiply
143,985.22x = 198,697.99 × 79,454.95 - Step 4: Simplify right side
143,985.22x = 15,787,538,649.52 - Step 5: Solve for x
x = 15,787,538,649.52/143,985.22 - Step 6: Final answer
x = 109,646.94
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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.