Finding the Fourth Proportional to 187,126.53, 258,349.02 and 121,777.62
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Solution
The fourth proportional to 187,126.53, 258,349.02 and 121,777.62 is: 168,127.57
Step by Step Solution
- Step 1: Write the proportion equation
187,126.53 : 258,349.02 = 121,777.62 : x - Step 2: Convert to fraction form
187,126.53/258,349.02 = 121,777.62/x - Step 3: Cross multiply
187,126.53x = 258,349.02 × 121,777.62 - Step 4: Simplify right side
187,126.53x = 31,461,128,784.93 - Step 5: Solve for x
x = 31,461,128,784.93/187,126.53 - Step 6: Final answer
x = 168,127.57
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1.5x scale
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.