Finding the Fourth Proportional to 139,698.24, 192,777.86 and 79,267.64
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Solution
The fourth proportional to 139,698.24, 192,777.86 and 79,267.64 is: 109,386.09
Step by Step Solution
- Step 1: Write the proportion equation
139,698.24 : 192,777.86 = 79,267.64 : x - Step 2: Convert to fraction form
139,698.24/192,777.86 = 79,267.64/x - Step 3: Cross multiply
139,698.24x = 192,777.86 × 79,267.64 - Step 4: Simplify right side
139,698.24x = 15,281,044,646.22 - Step 5: Solve for x
x = 15,281,044,646.22/139,698.24 - Step 6: Final answer
x = 109,386.09
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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.