Finding the Fourth Proportional to 149,781.86, 206,347.40 and 104,377.31
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Solution
The fourth proportional to 149,781.86, 206,347.40 and 104,377.31 is: 143,795.69
Step by Step Solution
- Step 1: Write the proportion equation
149,781.86 : 206,347.40 = 104,377.31 : x - Step 2: Convert to fraction form
149,781.86/206,347.40 = 104,377.31/x - Step 3: Cross multiply
149,781.86x = 206,347.40 × 104,377.31 - Step 4: Simplify right side
149,781.86x = 21,537,986,149.09 - Step 5: Solve for x
x = 21,537,986,149.09/149,781.86 - Step 6: Final answer
x = 143,795.69
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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.