Finding the Fourth Proportional to 93,129.80, 139,694.70 and 84,819.20
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Solution
The fourth proportional to 93,129.80, 139,694.70 and 84,819.20 is: 127,228.80
Step by Step Solution
- Step 1: Write the proportion equation
93,129.80 : 139,694.70 = 84,819.20 : x - Step 2: Convert to fraction form
93,129.80/139,694.70 = 84,819.20/x - Step 3: Cross multiply
93,129.80x = 139,694.70 × 84,819.20 - Step 4: Simplify right side
93,129.80x = 11,848,792,698.24 - Step 5: Solve for x
x = 11,848,792,698.24/93,129.80 - Step 6: Final answer
x = 127,228.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.