Finding the Fourth Proportional to 117,349.41, 161,899.73 and 77,085.09
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Solution
The fourth proportional to 117,349.41, 161,899.73 and 77,085.09 is: 106,349.53
Step by Step Solution
- Step 1: Write the proportion equation
117,349.41 : 161,899.73 = 77,085.09 : x - Step 2: Convert to fraction form
117,349.41/161,899.73 = 77,085.09/x - Step 3: Cross multiply
117,349.41x = 161,899.73 × 77,085.09 - Step 4: Simplify right side
117,349.41x = 12,480,054,448.53 - Step 5: Solve for x
x = 12,480,054,448.53/117,349.41 - Step 6: Final answer
x = 106,349.53
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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.