Finding the Fourth Proportional to 139,995.41, 193,188.84 and 79,565.00
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Solution
The fourth proportional to 139,995.41, 193,188.84 and 79,565.00 is: 109,796.95
Step by Step Solution
- Step 1: Write the proportion equation
139,995.41 : 193,188.84 = 79,565.00 : x - Step 2: Convert to fraction form
139,995.41/193,188.84 = 79,565.00/x - Step 3: Cross multiply
139,995.41x = 193,188.84 × 79,565.00 - Step 4: Simplify right side
139,995.41x = 15,371,069,088.66 - Step 5: Solve for x
x = 15,371,069,088.66/139,995.41 - Step 6: Final answer
x = 109,796.95
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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.