Finding the Fourth Proportional to 139,487.36, 192,486.12 and 79,054.52
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Solution
The fourth proportional to 139,487.36, 192,486.12 and 79,054.52 is: 109,091.59
Step by Step Solution
- Step 1: Write the proportion equation
139,487.36 : 192,486.12 = 79,054.52 : x - Step 2: Convert to fraction form
139,487.36/192,486.12 = 79,054.52/x - Step 3: Cross multiply
139,487.36x = 192,486.12 × 79,054.52 - Step 4: Simplify right side
139,487.36x = 15,216,897,823.26 - Step 5: Solve for x
x = 15,216,897,823.26/139,487.36 - Step 6: Final answer
x = 109,091.59
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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.