Finding the Fourth Proportional to 99,139.20, 136,749.84 and 58,824.48
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Solution
The fourth proportional to 99,139.20, 136,749.84 and 58,824.48 is: 81,140.84
Step by Step Solution
- Step 1: Write the proportion equation
99,139.20 : 136,749.84 = 58,824.48 : x - Step 2: Convert to fraction form
99,139.20/136,749.84 = 58,824.48/x - Step 3: Cross multiply
99,139.20x = 136,749.84 × 58,824.48 - Step 4: Simplify right side
99,139.20x = 8,044,238,228.08 - Step 5: Solve for x
x = 8,044,238,228.08/99,139.20 - Step 6: Final answer
x = 81,140.84
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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.