Finding the Fourth Proportional to 106,789.02, 147,398.09 and 66,478.83
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Solution
The fourth proportional to 106,789.02, 147,398.09 and 66,478.83 is: 91,758.99
Step by Step Solution
- Step 1: Write the proportion equation
106,789.02 : 147,398.09 = 66,478.83 : x - Step 2: Convert to fraction form
106,789.02/147,398.09 = 66,478.83/x - Step 3: Cross multiply
106,789.02x = 147,398.09 × 66,478.83 - Step 4: Simplify right side
106,789.02x = 9,798,852,235.04 - Step 5: Solve for x
x = 9,798,852,235.04/106,789.02 - Step 6: Final answer
x = 91,758.99
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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.