Finding the Fourth Proportional to 99,121.12, 136,782.48 and 53,798.08
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Solution
The fourth proportional to 99,121.12, 136,782.48 and 53,798.08 is: 74,238.82
Step by Step Solution
- Step 1: Write the proportion equation
99,121.12 : 136,782.48 = 53,798.08 : x - Step 2: Convert to fraction form
99,121.12/136,782.48 = 53,798.08/x - Step 3: Cross multiply
99,121.12x = 136,782.48 × 53,798.08 - Step 4: Simplify right side
99,121.12x = 7,358,634,801.64 - Step 5: Solve for x
x = 7,358,634,801.64/99,121.12 - Step 6: Final answer
x = 74,238.82
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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.