Finding the Fourth Proportional to 128,427.04, 177,248.12 and 73,968.74
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Solution
The fourth proportional to 128,427.04, 177,248.12 and 73,968.74 is: 102,087.69
Step by Step Solution
- Step 1: Write the proportion equation
128,427.04 : 177,248.12 = 73,968.74 : x - Step 2: Convert to fraction form
128,427.04/177,248.12 = 73,968.74/x - Step 3: Cross multiply
128,427.04x = 177,248.12 × 73,968.74 - Step 4: Simplify right side
128,427.04x = 13,110,820,140.41 - Step 5: Solve for x
x = 13,110,820,140.41/128,427.04 - Step 6: Final answer
x = 102,087.69
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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.