Finding the Fourth Proportional to 128,541.30, 177,331.98 and 77,525.00
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Solution
The fourth proportional to 128,541.30, 177,331.98 and 77,525.00 is: 106,951.32
Step by Step Solution
- Step 1: Write the proportion equation
128,541.30 : 177,331.98 = 77,525.00 : x - Step 2: Convert to fraction form
128,541.30/177,331.98 = 77,525.00/x - Step 3: Cross multiply
128,541.30x = 177,331.98 × 77,525.00 - Step 4: Simplify right side
128,541.30x = 13,747,661,818.55 - Step 5: Solve for x
x = 13,747,661,818.55/128,541.30 - Step 6: Final answer
x = 106,951.32
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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.