Finding the Fourth Proportional to 128,533.94, 192,880.74 and 61,980.92
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Solution
The fourth proportional to 128,533.94, 192,880.74 and 61,980.92 is: 93,009.88
Step by Step Solution
- Step 1: Write the proportion equation
128,533.94 : 192,880.74 = 61,980.92 : x - Step 2: Convert to fraction form
128,533.94/192,880.74 = 61,980.92/x - Step 3: Cross multiply
128,533.94x = 192,880.74 × 61,980.92 - Step 4: Simplify right side
128,533.94x = 11,954,925,715.48 - Step 5: Solve for x
x = 11,954,925,715.48/128,533.94 - Step 6: Final answer
x = 93,009.88
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1.5x scale
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.