Finding the Fourth Proportional to 128,830.80, 193,246.20 and 106,669.20
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Solution
The fourth proportional to 128,830.80, 193,246.20 and 106,669.20 is: 160,003.80
Step by Step Solution
- Step 1: Write the proportion equation
128,830.80 : 193,246.20 = 106,669.20 : x - Step 2: Convert to fraction form
128,830.80/193,246.20 = 106,669.20/x - Step 3: Cross multiply
128,830.80x = 193,246.20 × 106,669.20 - Step 4: Simplify right side
128,830.80x = 20,613,417,557.04 - Step 5: Solve for x
x = 20,613,417,557.04/128,830.80 - Step 6: Final answer
x = 160,003.80
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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.