Finding the Fourth Proportional to 139,726.11, 192,848.60 and 79,302.41
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Solution
The fourth proportional to 139,726.11, 192,848.60 and 79,302.41 is: 109,452.40
Step by Step Solution
- Step 1: Write the proportion equation
139,726.11 : 192,848.60 = 79,302.41 : x - Step 2: Convert to fraction form
139,726.11/192,848.60 = 79,302.41/x - Step 3: Cross multiply
139,726.11x = 192,848.60 × 79,302.41 - Step 4: Simplify right side
139,726.11x = 15,293,358,745.13 - Step 5: Solve for x
x = 15,293,358,745.13/139,726.11 - Step 6: Final answer
x = 109,452.40
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1.5x scale
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.