Finding the Fourth Proportional to 99,220.21, 136,925.34 and 53,899.04
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Solution
The fourth proportional to 99,220.21, 136,925.34 and 53,899.04 is: 74,381.46
Step by Step Solution
- Step 1: Write the proportion equation
99,220.21 : 136,925.34 = 53,899.04 : x - Step 2: Convert to fraction form
99,220.21/136,925.34 = 53,899.04/x - Step 3: Cross multiply
99,220.21x = 136,925.34 × 53,899.04 - Step 4: Simplify right side
99,220.21x = 7,380,144,377.67 - Step 5: Solve for x
x = 7,380,144,377.67/99,220.21 - Step 6: Final answer
x = 74,381.46
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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.