Finding the Fourth Proportional to 128,101.44, 176,862.30 and 82,848.80
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Solution
The fourth proportional to 128,101.44, 176,862.30 and 82,848.80 is: 114,384.58
Step by Step Solution
- Step 1: Write the proportion equation
128,101.44 : 176,862.30 = 82,848.80 : x - Step 2: Convert to fraction form
128,101.44/176,862.30 = 82,848.80/x - Step 3: Cross multiply
128,101.44x = 176,862.30 × 82,848.80 - Step 4: Simplify right side
128,101.44x = 14,652,829,320.24 - Step 5: Solve for x
x = 14,652,829,320.24/128,101.44 - Step 6: Final answer
x = 114,384.58
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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.