Finding the Fourth Proportional to 139,342.76, 192,294.42 and 75,681.80
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Solution
The fourth proportional to 139,342.76, 192,294.42 and 75,681.80 is: 104,441.65
Step by Step Solution
- Step 1: Write the proportion equation
139,342.76 : 192,294.42 = 75,681.80 : x - Step 2: Convert to fraction form
139,342.76/192,294.42 = 75,681.80/x - Step 3: Cross multiply
139,342.76x = 192,294.42 × 75,681.80 - Step 4: Simplify right side
139,342.76x = 14,553,187,835.56 - Step 5: Solve for x
x = 14,553,187,835.56/139,342.76 - Step 6: Final answer
x = 104,441.65
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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.