Finding the Fourth Proportional to 139,932.99, 193,101.84 and 76,269.42
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Solution
The fourth proportional to 139,932.99, 193,101.84 and 76,269.42 is: 105,248.70
Step by Step Solution
- Step 1: Write the proportion equation
139,932.99 : 193,101.84 = 76,269.42 : x - Step 2: Convert to fraction form
139,932.99/193,101.84 = 76,269.42/x - Step 3: Cross multiply
139,932.99x = 193,101.84 × 76,269.42 - Step 4: Simplify right side
139,932.99x = 14,727,765,337.73 - Step 5: Solve for x
x = 14,727,765,337.73/139,932.99 - Step 6: Final answer
x = 105,248.70
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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.