Finding the Fourth Proportional to 128,135.70, 192,203.55 and 83,898.90
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Solution
The fourth proportional to 128,135.70, 192,203.55 and 83,898.90 is: 125,848.35
Step by Step Solution
- Step 1: Write the proportion equation
128,135.70 : 192,203.55 = 83,898.90 : x - Step 2: Convert to fraction form
128,135.70/192,203.55 = 83,898.90/x - Step 3: Cross multiply
128,135.70x = 192,203.55 × 83,898.90 - Step 4: Simplify right side
128,135.70x = 16,125,666,421.10 - Step 5: Solve for x
x = 16,125,666,421.10/128,135.70 - Step 6: Final answer
x = 125,848.35
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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.