Finding the Fourth Proportional to 99,101.21, 136,759.77 and 56,660.63
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Solution
The fourth proportional to 99,101.21, 136,759.77 and 56,660.63 is: 78,191.72
Step by Step Solution
- Step 1: Write the proportion equation
99,101.21 : 136,759.77 = 56,660.63 : x - Step 2: Convert to fraction form
99,101.21/136,759.77 = 56,660.63/x - Step 3: Cross multiply
99,101.21x = 136,759.77 × 56,660.63 - Step 4: Simplify right side
99,101.21x = 7,748,894,443.55 - Step 5: Solve for x
x = 7,748,894,443.55/99,101.21 - Step 6: Final answer
x = 78,191.72
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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.