Finding the Fourth Proportional to 128,252.81, 176,985.77 and 70,106.96
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Solution
The fourth proportional to 128,252.81, 176,985.77 and 70,106.96 is: 96,745.90
Step by Step Solution
- Step 1: Write the proportion equation
128,252.81 : 176,985.77 = 70,106.96 : x - Step 2: Convert to fraction form
128,252.81/176,985.77 = 70,106.96/x - Step 3: Cross multiply
128,252.81x = 176,985.77 × 70,106.96 - Step 4: Simplify right side
128,252.81x = 12,407,933,588.30 - Step 5: Solve for x
x = 12,407,933,588.30/128,252.81 - Step 6: Final answer
x = 96,745.90
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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.