Finding the Fourth Proportional to 98,774.91, 136,035.86 and 85,341.87
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Solution
The fourth proportional to 98,774.91, 136,035.86 and 85,341.87 is: 117,535.46
Step by Step Solution
- Step 1: Write the proportion equation
98,774.91 : 136,035.86 = 85,341.87 : x - Step 2: Convert to fraction form
98,774.91/136,035.86 = 85,341.87/x - Step 3: Cross multiply
98,774.91x = 136,035.86 × 85,341.87 - Step 4: Simplify right side
98,774.91x = 11,609,554,252.75 - Step 5: Solve for x
x = 11,609,554,252.75/98,774.91 - Step 6: Final answer
x = 117,535.46
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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.