Finding the Fourth Proportional to 128,798.09, 177,535.99 and 101,529.70
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Solution
The fourth proportional to 128,798.09, 177,535.99 and 101,529.70 is: 139,949.10
Step by Step Solution
- Step 1: Write the proportion equation
128,798.09 : 177,535.99 = 101,529.70 : x - Step 2: Convert to fraction form
128,798.09/177,535.99 = 101,529.70/x - Step 3: Cross multiply
128,798.09x = 177,535.99 × 101,529.70 - Step 4: Simplify right side
128,798.09x = 18,025,176,681.83 - Step 5: Solve for x
x = 18,025,176,681.83/128,798.09 - Step 6: Final answer
x = 139,949.10
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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.