Finding the Fourth Proportional to 140,416.13, 193,774.26 and 76,754.18
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Solution
The fourth proportional to 140,416.13, 193,774.26 and 76,754.18 is: 105,920.77
Step by Step Solution
- Step 1: Write the proportion equation
140,416.13 : 193,774.26 = 76,754.18 : x - Step 2: Convert to fraction form
140,416.13/193,774.26 = 76,754.18/x - Step 3: Cross multiply
140,416.13x = 193,774.26 × 76,754.18 - Step 4: Simplify right side
140,416.13x = 14,872,983,462.54 - Step 5: Solve for x
x = 14,872,983,462.54/140,416.13 - Step 6: Final answer
x = 105,920.77
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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.