Finding the Fourth Proportional to 139,334.99, 192,284.48 and 78,903.99
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Solution
The fourth proportional to 139,334.99, 192,284.48 and 78,903.99 is: 108,888.75
Step by Step Solution
- Step 1: Write the proportion equation
139,334.99 : 192,284.48 = 78,903.99 : x - Step 2: Convert to fraction form
139,334.99/192,284.48 = 78,903.99/x - Step 3: Cross multiply
139,334.99x = 192,284.48 × 78,903.99 - Step 4: Simplify right side
139,334.99x = 15,172,012,884.34 - Step 5: Solve for x
x = 15,172,012,884.34/139,334.99 - Step 6: Final answer
x = 108,888.75
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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.