Finding the Fourth Proportional to 187,133.04, 258,357.99 and 121,784.12
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Solution
The fourth proportional to 187,133.04, 258,357.99 and 121,784.12 is: 168,136.53
Step by Step Solution
- Step 1: Write the proportion equation
187,133.04 : 258,357.99 = 121,784.12 : x - Step 2: Convert to fraction form
187,133.04/258,357.99 = 121,784.12/x - Step 3: Cross multiply
187,133.04x = 258,357.99 × 121,784.12 - Step 4: Simplify right side
187,133.04x = 31,463,900,457.12 - Step 5: Solve for x
x = 31,463,900,457.12/187,133.04 - Step 6: Final answer
x = 168,136.53
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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.